◆ Supported
Order prepared process cards and complete a because frame at each arrow using a fictional population.
0 min
Lesson overviewLAUNCH · Science · Week 15L1 · Introduce
Variation and natural selection sequence
Verbatim workbook outcome: Explain variation & evolution by natural selection. · Trace: LAUNCH Weekly - Spring!C28
Objective: Explain how variation can affect survival and organise the steps of natural selection using the Foundation route.
Success evidence:
- Explain how variation can affect survival and organise the steps of natural selection using the Foundation route.
- Individuals in a population vary before the selection pressure acts.
- Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
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
Explain the full sequence for a supplied example and repair one misconception about need or choice.
★ Stretch
Compare two environments for the same variable trait and evaluate why an advantage is context-dependent.
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.
A foundation-route natural-selection sequence · entry map: Individuals with an advantageous variant may leave more offspring, passing the variant on more often. Link that anchor only when this second detail is relevant: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. For this a Foundation-route natural-selection sequence decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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
Individuals in a population vary before the selection pressure acts.
Some inherited variants can affect survival or reproductive success in a stated environment.
Individuals with an advantageous variant may leave more offspring, passing the variant on more often.
Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Arrival decision: Individuals in a population vary before the selection pressure acts. Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
A foundation-route natural-selection sequence · first source: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. Link that anchor only when this second detail is relevant: Individuals in a population vary before the selection pressure acts. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 existing variation in a population lead to a change across generations without organisms choosing to adapt?
1 · notice
2 · choose
3 · explain
How can existing variation in a population lead to a change across generations without organisms choosing to adapt? Some inherited variants can affect survival or reproductive success in a stated environment.
Checking questions:
- Individuals in a population vary before the selection pressure acts.
- Some inherited variants can affect survival or reproductive success in a stated environment.
- Individuals with an advantageous variant may leave more offspring, passing the variant on more often.
- Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
A foundation-route natural-selection sequence · initial comparison: Individuals in a population vary before the selection pressure acts. Link that anchor only when this second detail is relevant: Some inherited variants can affect survival or reproductive success in a stated environment. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 · modelA foundation-route natural-selection sequence
VARIATIONdifferences among individuals in a population
SELECTION PRESSUREan environmental factor affecting survival or reproduction
NATURAL SELECTIONthe process in which inherited variants linked to greater reproductive success become more common
Vocabulary in use
- VARIATION in a Foundation-route natural-selection sequence: differences among individuals in a population. Apply VARIATION when this anchor matters—Individuals in a population vary before the selection pressure acts.—and check it beside this second anchor: Some inherited variants can affect survival or reproductive success in a stated environment.
- SELECTION PRESSURE in a Foundation-route natural-selection sequence: an environmental factor affecting survival or reproduction. Apply SELECTION PRESSURE when this anchor matters—Some inherited variants can affect survival or reproductive success in a stated environment.—and check it beside this second anchor: Individuals with an advantageous variant may leave more offspring, passing the variant on more often.
- NATURAL SELECTION in a Foundation-route natural-selection sequence: the process in which inherited variants linked to greater reproductive success become more common. Apply NATURAL SELECTION when this anchor matters—Individuals with an advantageous variant may leave more offspring, passing the variant on more often.—and check it beside this second anchor: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Use a fictional beetle population with two inherited colour variants on a dark surface. Establish the variation first, then add the stated predator pressure. Compare survival and reproduction without saying every individual follows the same outcome. Sequence variation → selection pressure → differential survival and reproduction → inheritance → change in variant frequency over generations. Reject ‘the beetles changed colour because they wanted to survive.’
- Individuals in a population vary before the selection pressure acts.
- Some inherited variants can affect survival or reproductive success in a stated environment.
- Individuals with an advantageous variant may leave more offspring, passing the variant on more often.
- Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
- Explain how variation can affect survival and organise the steps of natural selection using the Foundation route.
Staff-only guidance: model one complete route, remove the model, and receive a fresh learner decision.
A foundation-route natural-selection sequence · worked reasoning: Some inherited variants can affect survival or reproductive success in a stated environment. Link that anchor only when this second detail is relevant: Individuals with an advantageous variant may leave more offspring, passing the variant on more often. For this a Foundation-route natural-selection sequence decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 existing variation in a population lead to a change across generations without organisms choosing to adapt?
Individuals with an advantageous variant may leave more offspring, passing the variant on more often. Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Audience check: the adult names back exactly what was received. The learner confirms or corrects before the class moves on.
A foundation-route natural-selection sequence · hinge decision: Individuals with an advantageous variant may leave more offspring, passing the variant on more often. Link that anchor only when this second detail is relevant: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 · connectA foundation-route natural-selection sequence
Available evidence
Individuals in a population vary before the selection pressure acts.
Reasoning move
Some inherited variants can affect survival or reproductive success in a stated environment.
Boundary or next check
Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Individuals in a population vary before the selection pressure acts. Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Use a fictional beetle population with two inherited colour variants on a dark surface. Establish the variation first, then add the stated predator pressure. Compare survival and reproduction without saying every individual follows the same outcome. Sequence variation → selection pressure → differential survival and reproduction → inheritance → change in variant frequency over generations. Reject ‘the beetles changed colour because they wanted to survive.’ Build and explain a Foundation-route natural-selection sequence from approved local cards. Keep population, inherited variation, environmental pressure, reproduction and generations visible. Apply the sequence to a second fictional organism and identify which step is evidence and which is explanation. Finish by repairing one need-based or individual-change misconception without introducing personal traits or family information. Individuals in a population vary before the selection pressure acts. Some inherited variants can affect survival or reproductive success in a stated environment. Individuals with an advantageous variant may leave more offspring, passing the variant on more often. Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. Order prepared process cards and complete a because frame at each arrow using a fictional population. Explain the full sequence for a supplied example and repair one misconception about need or choice. Compare two environments for the same variable trait and evaluate why an advantage is context-dependent. Use fictional or non-human populations only; no learner or family traits are requested. A model shows the logic of selection but does not prove a real population history by itself. Keep the Foundation route focused on inherited variation, environment, reproductive success and frequency change over generations. Optional staff stretch must not replace this core route.
A foundation-route natural-selection sequence · second connection: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. Link that anchor only when this second detail is relevant: Individuals in a population vary before the selection pressure acts. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 · labA foundation-route natural-selection sequence decision lab
◆ Supported
Order prepared process cards and complete a because frame at each arrow using a fictional population.
▲ Standard
Explain the full sequence for a supplied example and repair one misconception about need or choice.
★ Stretch
Compare two environments for the same variable trait and evaluate why an advantage is context-dependent.
Build and explain a Foundation-route natural-selection sequence from approved local cards. Keep population, inherited variation, environmental pressure, reproduction and generations visible. Apply the sequence to a second fictional organism and identify which step is evidence and which is explanation. Finish by repairing one need-based or individual-change misconception without introducing personal traits or family information.
A foundation-route natural-selection sequence · guided audit: Individuals in a population vary before the selection pressure acts. Link that anchor only when this second detail is relevant: Some inherited variants can affect survival or reproductive success in a stated environment. For this a Foundation-route natural-selection sequence decision, use pointing, selecting, signing, speaking, typing or exact-word scribing; the learner still chooses the evidence, order, comparison or action. Staff supporting a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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 · A foundation-route natural-selection sequence
Build and explain a Foundation-route natural-selection sequence from approved local cards. Keep population, inherited variation, environmental pressure, reproduction and generations visible. Apply the sequence to a second fictional organism and identify which step is evidence and which is explanation. Finish by repairing one need-based or individual-change misconception without introducing personal traits or family information.
◆ Supported
Order prepared process cards and complete a because frame at each arrow using a fictional population.
▲ Standard
Explain the full sequence for a supplied example and repair one misconception about need or choice.
★ Stretch
Compare two environments for the same variable trait and evaluate why an advantage is context-dependent.
Trace
Individuals in a population vary before the selection pressure acts.
Demand
Individuals with an advantageous variant may leave more offspring, passing the variant on more often.
Truth
Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to.
Exit route remains available: pause, use the print pack, reduce visual density or direct an adult. The named learning demand remains available.
A foundation-route natural-selection sequence · independent record: Some inherited variants can affect survival or reproductive success in a stated environment. Link that anchor only when this second detail is relevant: Individuals with an advantageous variant may leave more offspring, passing the variant on more often. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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
Explain one arrow in the sequence and name the evidence needed to support it. The adult repeats the population-level claim. Confirm it or repair any suggestion that an individual chose to evolve.
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.
A foundation-route natural-selection sequence · receiving point: Individuals with an advantageous variant may leave more offspring, passing the variant on more often. Link that anchor only when this second detail is relevant: Across many generations, the advantageous inherited variant can become more common in the population; individuals do not evolve because they need to. For this a Foundation-route natural-selection sequence 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 a Foundation-route natural-selection sequence may steady the named materials and read the displayed source exactly. They do not upgrade the a Foundation-route natural-selection sequence response, fill its missing result or convert its plan into completion. If access to a Foundation-route natural-selection sequence 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.