◆ Supported
Complete a sequenced explanation frame with prepared evidence locators and repair one need-based statement.
0 min
Lesson overviewLAUNCH · Science · Week 15L3 · Do
Natural selection explanation
Verbatim workbook outcome: Explain variation & evolution by natural selection. · Trace: LAUNCH Weekly - Spring!C28
Objective: Produce a Foundation-route explanation of evolution by natural selection using variation, selection and reproduction.
Success evidence:
- Produce a Foundation-route explanation of evolution by natural selection using variation, selection and reproduction.
- The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
- Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
40 minutesofflineFoundation route
FOCUS→EVIDENCE→LIMIT
wait · self-prompt · visual cue · general verbal · specific verbal · model · direct support · fade
Staff card: preserve the scientific demand; change access or response mode before demand.
Staff card: keep supplied observations separate from explanation and missing evidence.
Preparation guidance carrier.
Access guidance carrier.
Evidence guidance carrier.
▲ Standard
Write a connected Foundation-route explanation using the full causal sequence and one evidence limit.
★ Stretch
Evaluate the strength of each causal link, compare an alternative factor and defend which additional evidence would most improve the account.
Truth boundary: never backdate, never reconstruct a quotation, never stage an event, and never convert adult wording into the learner’s voice. Use only school-approved local materials. No diagnosis or medical advice. No personal or family disclosure. Learning does not depend on a runtime connection. No open runtime link. Never invent a result, date, quotation, event, audience response or learner wording. Use only school-approved local sources and supplied classroom materials. No open runtime link. No diagnosis or personal or family disclosure. A learner may pause, use the printed route, respond privately or direct an adult. A learner may pause, use a private route, observe, or direct an adult without losing the learning entitlement.
An evidence-linked natural-selection explanation · entry map: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. Link that anchor only when this second detail is relevant: A named selection pressure makes some variants more likely to survive and reproduce in that environment. For this an evidence-linked natural-selection explanation decision, use a printed choice, object placement, short phrase, symbol response or learner-directed mark; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
3 min
Arrival · retrieveRetrieve without guessing
The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
A named selection pressure makes some variants more likely to survive and reproduce in that environment.
Greater reproductive success passes the advantageous variant into the next generation more often.
Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
Arrival decision: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
An evidence-linked natural-selection explanation · first source: A named selection pressure makes some variants more likely to survive and reproduce in that environment. Link that anchor only when this second detail is relevant: Greater reproductive success passes the advantageous variant into the next generation more often. For this an evidence-linked natural-selection explanation decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
3 min
Starter · create the needHow can an evidence-linked explanation show population change by natural selection in the correct causal order?
1 · notice
2 · choose
3 · explain
How can an evidence-linked explanation show population change by natural selection in the correct causal order? A named selection pressure makes some variants more likely to survive and reproduce in that environment.
Checking questions:
- The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
- A named selection pressure makes some variants more likely to survive and reproduce in that environment.
- Greater reproductive success passes the advantageous variant into the next generation more often.
- Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
An evidence-linked natural-selection explanation · initial comparison: Greater reproductive success passes the advantageous variant into the next generation more often. Link that anchor only when this second detail is relevant: Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation. For this an evidence-linked natural-selection explanation decision, use a quiet card sort, a spoken response, a communication aid or adult handling directed by the learner; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
4 min
I Do · modelAn evidence-linked natural-selection explanation
INHERITEDpassed genetically from parents to offspring
REPRODUCTIVE SUCCESSrelative contribution of offspring to the next generation
EVOLUTIONchange in inherited characteristics of populations over generations
Vocabulary in use
- INHERITED in an evidence-linked natural-selection explanation: passed genetically from parents to offspring. Apply INHERITED when this anchor matters—The explanation begins with inherited variation within a population, not with an organism changing because it needs to.—and check it beside this second anchor: A named selection pressure makes some variants more likely to survive and reproduce in that environment.
- REPRODUCTIVE SUCCESS in an evidence-linked natural-selection explanation: relative contribution of offspring to the next generation. Apply REPRODUCTIVE SUCCESS when this anchor matters—A named selection pressure makes some variants more likely to survive and reproduce in that environment.—and check it beside this second anchor: Greater reproductive success passes the advantageous variant into the next generation more often.
- EVOLUTION in an evidence-linked natural-selection explanation: change in inherited characteristics of populations over generations. Apply EVOLUTION when this anchor matters—Greater reproductive success passes the advantageous variant into the next generation more often.—and check it beside this second anchor: Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
Construct a four-link Foundation explanation for a supplied fictional population. At each link, cite the relevant source detail: starting variation, environmental pressure, differential survival or reproduction, and frequency change across generations. Test the account by removing inheritance; if the final population change no longer follows, the missing link matters. Add one limit showing what the source does not establish.
- The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
- A named selection pressure makes some variants more likely to survive and reproduce in that environment.
- Greater reproductive success passes the advantageous variant into the next generation more often.
- Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
- Produce a Foundation-route explanation of evolution by natural selection using variation, selection and reproduction.
Staff-only guidance: model one complete route, remove the model, and receive a fresh learner decision.
An evidence-linked natural-selection explanation · worked reasoning: Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation. Link that anchor only when this second detail is relevant: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. For this an evidence-linked natural-selection explanation decision, use a printed choice, object placement, short phrase, symbol response or learner-directed mark; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
3 min
We Do · everyone commitsHow can an evidence-linked explanation show population change by natural selection in the correct causal order?
Greater reproductive success passes the advantageous variant into the next generation more often. Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
Audience check: the adult names back exactly what was received. The learner confirms or corrects before the class moves on.
An evidence-linked natural-selection explanation · hinge decision: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. Link that anchor only when this second detail is relevant: A named selection pressure makes some variants more likely to survive and reproduce in that environment. For this an evidence-linked natural-selection explanation decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
3 min
I Do 2 · connectAn evidence-linked natural-selection explanation
Available evidence
The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
Reasoning move
A named selection pressure makes some variants more likely to survive and reproduce in that environment.
Boundary or next check
Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
The explanation begins with inherited variation within a population, not with an organism changing because it needs to. Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
Construct a four-link Foundation explanation for a supplied fictional population. At each link, cite the relevant source detail: starting variation, environmental pressure, differential survival or reproduction, and frequency change across generations. Test the account by removing inheritance; if the final population change no longer follows, the missing link matters. Add one limit showing what the source does not establish. Produce an evidence-linked natural-selection explanation for one approved local example. Include inherited variation, the named environmental selection pressure, differential survival and reproduction, inheritance and population change across generations. Attach at least two source locators and one uncertainty. Then audit the explanation for three common errors: individual choice, change during one lifetime and claiming that every individual follows the trend. Revise only from supplied evidence. The explanation begins with inherited variation within a population, not with an organism changing because it needs to. A named selection pressure makes some variants more likely to survive and reproduce in that environment. Greater reproductive success passes the advantageous variant into the next generation more often. Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation. Complete a sequenced explanation frame with prepared evidence locators and repair one need-based statement. Write a connected Foundation-route explanation using the full causal sequence and one evidence limit. Evaluate the strength of each causal link, compare an alternative factor and defend which additional evidence would most improve the account. Use only fictional or non-human examples and local approved sources. No learner genotype, family history, diagnosis or personal variation is discussed. The core Foundation route remains central. An optional staff extension may compare evidence quality but must not replace the accessible causal sequence or introduce unsupported specification claims.
An evidence-linked natural-selection explanation · second connection: A named selection pressure makes some variants more likely to survive and reproduce in that environment. Link that anchor only when this second detail is relevant: Greater reproductive success passes the advantageous variant into the next generation more often. For this an evidence-linked natural-selection explanation decision, use a quiet card sort, a spoken response, a communication aid or adult handling directed by the learner; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
4 min
We Do 2 · labAn evidence-linked natural-selection explanation decision lab
◆ Supported
Complete a sequenced explanation frame with prepared evidence locators and repair one need-based statement.
▲ Standard
Write a connected Foundation-route explanation using the full causal sequence and one evidence limit.
★ Stretch
Evaluate the strength of each causal link, compare an alternative factor and defend which additional evidence would most improve the account.
Produce an evidence-linked natural-selection explanation for one approved local example. Include inherited variation, the named environmental selection pressure, differential survival and reproduction, inheritance and population change across generations. Attach at least two source locators and one uncertainty. Then audit the explanation for three common errors: individual choice, change during one lifetime and claiming that every individual follows the trend. Revise only from supplied evidence.
An evidence-linked natural-selection explanation · guided audit: Greater reproductive success passes the advantageous variant into the next generation more often. Link that anchor only when this second detail is relevant: Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation. For this an evidence-linked natural-selection explanation decision, use a printed choice, object placement, short phrase, symbol response or learner-directed mark; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
16 min
Independent · evidenceIndependent record · An evidence-linked natural-selection explanation
Produce an evidence-linked natural-selection explanation for one approved local example. Include inherited variation, the named environmental selection pressure, differential survival and reproduction, inheritance and population change across generations. Attach at least two source locators and one uncertainty. Then audit the explanation for three common errors: individual choice, change during one lifetime and claiming that every individual follows the trend. Revise only from supplied evidence.
◆ Supported
Complete a sequenced explanation frame with prepared evidence locators and repair one need-based statement.
▲ Standard
Write a connected Foundation-route explanation using the full causal sequence and one evidence limit.
★ Stretch
Evaluate the strength of each causal link, compare an alternative factor and defend which additional evidence would most improve the account.
Trace
The explanation begins with inherited variation within a population, not with an organism changing because it needs to.
Demand
Greater reproductive success passes the advantageous variant into the next generation more often.
Truth
Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation.
Exit route remains available: pause, use the print pack, reduce visual density or direct an adult. The named learning demand remains available.
An evidence-linked natural-selection explanation · independent record: Repeated across generations, variant frequency changes in the population; evidence and limits remain attached to the explanation. Link that anchor only when this second detail is relevant: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. For this an evidence-linked natural-selection explanation decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.
4 min
Exit · Audience and InfluenceAudience receives; Influence changes one next action
Present the complete causal sequence in one concise account and point to the evidence for one link. The adult names back the population-level conclusion. Confirm it or repair any missing inheritance or generation step.
SPACE: the learner may pause or choose a private response.
VOICE: the evidence statement remains in the learner’s chosen communication mode.
AUDIENCE: a familiar adult receives and names back exactly what was heard or seen.
INFLUENCE: one real next action is recorded: retain, add method detail, or leave open.
Final check: no result, quote, date, event or pupil wording has been created to make the map look complete. The HTML stores no learner response.
An evidence-linked natural-selection explanation · receiving point: The explanation begins with inherited variation within a population, not with an organism changing because it needs to. Link that anchor only when this second detail is relevant: A named selection pressure makes some variants more likely to survive and reproduce in that environment. For this an evidence-linked natural-selection explanation decision, use a quiet card sort, a spoken response, a communication aid or adult handling directed by the learner; the learner still chooses the evidence, order, comparison or action. Staff supporting an evidence-linked natural-selection explanation may steady the named materials and read the displayed source exactly. They do not upgrade the an evidence-linked natural-selection explanation response, fill its missing result or convert its plan into completion. If access to an evidence-linked natural-selection explanation stalls, pause, lower visual density or move to the printed route while keeping the same reasoning demand.
SPACEVOICEAUDIENCEINFLUENCE
SPACE stays available. VOICE is received. AUDIENCE names back exactly. INFLUENCE changes one real next action.