π§ Watch me think: Ruler, pencil underneath as the pivot, load on the end. Pivot in the middle β I am working hard. Now I slide the pivot close to the load. Much easier. But watch my hand: it is travelling much further than before. I did not get something for nothing. I traded distance for force.
Slide the β² PIVOT toward the load and the lift gets EASIER β but the hand travels FURTHER. A mechanism trades distance for force; it never gives force for free.
π Key definitions
mechanism β A part that changes a force β its size, its direction, or both.
lever β A rigid bar that turns around a pivot.
pivot β The fixed point a lever turns around.
pulley β A wheel with a rope over it; changes the direction of a pull.
β Common mistake: A mechanism gives you free force. β Actually: Measure the distance moved at each end. You pay in distance for every bit of force you gain.
Use the remaining practice time: Repeat both pivot positions with the same small load rise. Pupils predict which hand path is longer, then direct the adult to compare them. Keep the effort point fixed; do not use heavy loads.
π€ We Do Β· together
Which mechanism?
Name it before you tap.Found 0/5
Wheelbarrow
Flagpole rope over a wheel at the top
Bicycle chain and cogs
Scissors
Spanner on a tight bolt
Use the remaining practice time: Use the lever and fixed flagpole pulley first. Trace effort, load and movement direction. Compare what each changes; then use the remaining everyday examples if ready.
π§ Watch me think: Answer shape: 'This is a ____ because it turns around a ____ / changes the ____. It makes the job easier by ____, but you have to ____.' Gain and cost, both stated.
Assessor witness Β· what the adult is watching for
Named lever, pulley and gear with one example each.
Identified the pivot correctly.
Stated both the gain and the cost of a mechanism.
πΈ Capture: Photograph the pupil's lever set-up at both pivot positions, with the load visible.
π€ We Do 2 Β· sort, then write
Gain or cost?
Sort, donβt guess. Put each card in the right bin.Sorted 0/5
Less force needed
Hand travels further
Pull down instead of up
Mechanism creates extra energy
Slower turning, more turning force
β GAIN
β COST
β² NEITHER
β GAIN AND COST TOGETHER
βΈ STOP for today β label and keep your work. Tuesday P1 (09:30β10:10): use Resume period 2 on the title screen.
Use the remaining practice time: Choose one gain and one cost from the sort. Move the model to show both. Ask what stayed constant before accepting the easier claim; correct a label using the observation.
βοΈ Independent Work
Your turn β pick your tier
βΆ Tuesday P1 (09:30β10:10) β restart here. First retrieve the previous lesson; the workshop includes its own check and tidy-up.
32-minute workshop. Use the phases below. Choose a supported, standard or stretch route with your adult; pointing, signing, directing, drawing or writing can show the same science.
32:00
β Supported
Direct or observe both marked pivot positions. Tick which feels easier, then point to where the effort, load and pivot are. Tell the adult if the effort felt similar.
β² Standard
Compare both positions with the same load and lift height. Record easier/similar/harder and explain how the effort arm changed.
β Stretch
Compare effort and hand travel for the same load rise. Measure hand travel if suitable equipment is available; use force numbers only if measured with an appropriate meter. Explain the trade-off.
Two lever positions, one load
4 min: Recover Mondayβs lever rule. Check the adult-prepared lever, light load and two marked pivot positions.
20 min: Use the same load and effort point. Compare a middle pivot with a pivot nearer the load. Raise the load to the same small target height; record the effort as easier/similar/harder, and compare hand travel.
2 min: Pens down if you are writing; pause and check. Check whether the load, lift height and effort point were kept the same. A partner or adult may move the lever while you observe.
6 min: Repeat one comparison, improve a label or explanation, and return all small parts. Use a diagram explanation if safe equipment is unavailable.
Access and equipment: Adult-secured card/ruler lever, broad stable pivot and a light secured load such as an eraser. Use a small controlled lift, never launch objects; hands stay clear of the pivot. Preassembled or adult-operated kit is available.
Configuration
Pivot near middle
Pivot nearer load
Same load / lift height checked?
________________
________________
Effort: easier / similar / harder
________________
________________
Hand travel (observe, or measure with unit)
________________
________________
Label on a simple sketch: EFFORT β PIVOT β LOAD.
My explanation: ____________________.
Model limit: A ruler lever shows the forceβdistance trade-off; friction and bending make a real model imperfect.
π Lundy Loop
Where what you say changes something
This is where your voice changes what happens next.
π‘ Space
Loads and masses get dropped. Feet clear of the bench, and tell me if the weight is too much to handle safely.
π£ Voice
Point, sign, say or show one observation, question or access need. You may pass or speak privately.
π Audience
Tell the adult teaching this lesson, or ask a chosen partner to help you pass on the message.
β Influence
The adult says what can change now, makes one agreed change if possible, and explains any limit. Check whether the change helped; no display or sharing is assumed.
π« Exit Ticket
Before you go
β Supported
Name the point a lever turns around.
pivot
β² Standard
Explain why moving the pivot closer to the load makes lifting easier.
The effort arm becomes longer relative to the load arm, so less force is needed.
β Stretch
Explain why no mechanism can give you force without a cost.
A mechanism cannot create energy. Gaining output force involves a distance trade-off; real mechanisms also dissipate some energy, for example through friction.
Slide 1/10
π πΈβοΈ
Levers, Pulleys and Gears β banked!
GROW Science Β· Week 4 β
β I can name the three mechanisms and point to one example of each.β I can identify the pivot on a lever.β I can explain what a mechanism gives you and what it costs you.
OPTIONAL EVIDENCE CHECK
Check one piece of evidence
Show an adult or chosen partner, or quietly check your own work against todayβs success: I can name the three mechanisms and point to one example of each. and I can identify the pivot on a lever.. Keep or correct one thing using the evidence.
The planned two-minute check belongs inside the workshop. If this optional panel is opened manually, resume when ready and allow for the pause in the teaching plan.
Knowledge Organiser β Levers, Pulleys and Gears
GROW Β· White Rose Science Year 5/6 Β· Week 4
Key word
What it means
mechanism
A part that changes a force β its size, its direction, or both.
lever
A rigid bar that turns around a pivot.
pivot
The fixed point a lever turns around.
pulley
A wheel with a rope over it; changes the direction of a pull.
gear
A toothed wheel that turns another toothed wheel.
Key facts
A mechanism does not create energy. It trades distance for force.
Move the pivot closer to the load and the lever gets easier β but you move the other end further.
A single fixed pulley changes direction only. Adding pulleys shares the load.
A small gear driving a big gear turns slower but with more turning force.
Scissors, wheelbarrows, spanners and door handles are all levers.
Success criteria
I can name the three mechanisms and point to one example of each.
I can identify the pivot on a lever.
I can explain what a mechanism gives you and what it costs you.
Levers, Pulleys and Gears
Name: ____________________ Tier ringed by adult: β Supported β² Standard β Stretch Date:
Learning objective
I can explain how mechanisms change force size or direction, and describe a trade-off.
Teaching plan: Monday P2 (10:10β10:50) β Title through We Do 2: 40 minutes. STOP after We Do 2, label and keep the work. Tuesday P1 (09:30β10:10) β restart at Independent Work: 32-minute workshop, 4-minute pupil feedback, 4-minute Exit Ticket. Total: 40 minutes on each day; 80 across the week. Timers guide the plan and never advance a pupil automatically.
Today at a Glance
Find the pivot
Move it and feel the difference
Say what it costs
Arrival task
Open the scissors on your desk. Point to the part that everything turns around.
Name the part of the scissors that everything turns around.
Name the pivot on the scissors, and on the wheelbarrow picture.
We Do β Sort each card into the right group
Less force needed → ______________________________
Hand travels further → ______________________________
Pull down instead of up → ______________________________
Mechanism creates extra energy → ______________________________
Slower turning, more turning force → ______________________________
WAGOLL
The wheelbarrow is a lever because it turns around a pivot at the wheel. Putting the load near the wheel means I lift with less force, but I have to lift the handles through a bigger distance.
Scaffolding β β Supported
Adult notes β access & sensory Forces work is noisy and physical β trolleys, ramps, dropped masses. Agree the noise signal before equipment comes out, and offer ear defenders without making it a conversation. A pupil may record data instead of running the trial and still be doing the science.
Sentence stems
Answer shape: 'This is a ____ because it turns around a ____ / changes the ____. It makes the job easier by ____, but you have to ____.' Gain and cost, both stated.
Word bank
mechanism, lever, pivot, pulley, gear
Scaffolding β β² Standard
Sentence stems
Answer shape: 'This is a ____ because it turns around a ____ / changes the ____. It makes the job easier by ____, but you have to ____.' Gain and cost, both stated.
Word bank
mechanism, lever, pivot, pulley, gear
Scaffolding β β Stretch
Sentence stems
Answer shape: 'This is a ____ because it turns around a ____ / changes the ____. It makes the job easier by ____, but you have to ____.' Gain and cost, both stated.
Word bank
mechanism, lever, pivot, pulley, gear
Independent Work β β Supported
Task: Direct or observe both marked pivot positions. Tick which feels easier, then point to where the effort, load and pivot are. Tell the adult if the effort felt similar.
Two lever positions, one load
4 min: Recover Mondayβs lever rule. Check the adult-prepared lever, light load and two marked pivot positions.
20 min: Use the same load and effort point. Compare a middle pivot with a pivot nearer the load. Raise the load to the same small target height; record the effort as easier/similar/harder, and compare hand travel.
2 min: Pens down if you are writing; pause and check. Check whether the load, lift height and effort point were kept the same. A partner or adult may move the lever while you observe.
6 min: Repeat one comparison, improve a label or explanation, and return all small parts. Use a diagram explanation if safe equipment is unavailable.
Access and equipment: Adult-secured card/ruler lever, broad stable pivot and a light secured load such as an eraser. Use a small controlled lift, never launch objects; hands stay clear of the pivot. Preassembled or adult-operated kit is available.
Configuration
Pivot near middle
Pivot nearer load
Same load / lift height checked?
________________
________________
Effort: easier / similar / harder
________________
________________
Hand travel (observe, or measure with unit)
________________
________________
Label on a simple sketch: EFFORT β PIVOT β LOAD.
My explanation: ____________________.
Model limit: A ruler lever shows the forceβdistance trade-off; friction and bending make a real model imperfect.
Independent Work β β² Standard
Task: Compare both positions with the same load and lift height. Record easier/similar/harder and explain how the effort arm changed.
Two lever positions, one load
4 min: Recover Mondayβs lever rule. Check the adult-prepared lever, light load and two marked pivot positions.
20 min: Use the same load and effort point. Compare a middle pivot with a pivot nearer the load. Raise the load to the same small target height; record the effort as easier/similar/harder, and compare hand travel.
2 min: Pens down if you are writing; pause and check. Check whether the load, lift height and effort point were kept the same. A partner or adult may move the lever while you observe.
6 min: Repeat one comparison, improve a label or explanation, and return all small parts. Use a diagram explanation if safe equipment is unavailable.
Access and equipment: Adult-secured card/ruler lever, broad stable pivot and a light secured load such as an eraser. Use a small controlled lift, never launch objects; hands stay clear of the pivot. Preassembled or adult-operated kit is available.
Configuration
Pivot near middle
Pivot nearer load
Same load / lift height checked?
________________
________________
Effort: easier / similar / harder
________________
________________
Hand travel (observe, or measure with unit)
________________
________________
Label on a simple sketch: EFFORT β PIVOT β LOAD.
My explanation: ____________________.
Model limit: A ruler lever shows the forceβdistance trade-off; friction and bending make a real model imperfect.
Independent Work β β Stretch
Task: Compare effort and hand travel for the same load rise. Measure hand travel if suitable equipment is available; use force numbers only if measured with an appropriate meter. Explain the trade-off.
Two lever positions, one load
4 min: Recover Mondayβs lever rule. Check the adult-prepared lever, light load and two marked pivot positions.
20 min: Use the same load and effort point. Compare a middle pivot with a pivot nearer the load. Raise the load to the same small target height; record the effort as easier/similar/harder, and compare hand travel.
2 min: Pens down if you are writing; pause and check. Check whether the load, lift height and effort point were kept the same. A partner or adult may move the lever while you observe.
6 min: Repeat one comparison, improve a label or explanation, and return all small parts. Use a diagram explanation if safe equipment is unavailable.
Access and equipment: Adult-secured card/ruler lever, broad stable pivot and a light secured load such as an eraser. Use a small controlled lift, never launch objects; hands stay clear of the pivot. Preassembled or adult-operated kit is available.
Configuration
Pivot near middle
Pivot nearer load
Same load / lift height checked?
________________
________________
Effort: easier / similar / harder
________________
________________
Hand travel (observe, or measure with unit)
________________
________________
Label on a simple sketch: EFFORT β PIVOT β LOAD.
My explanation: ____________________.
Model limit: A ruler lever shows the forceβdistance trade-off; friction and bending make a real model imperfect.
Exit Ticket
Explain why moving the pivot closer to the load makes lifting easier.
Assessor Witness Statement
Pearson Entry Level Science 8939 (E1βE3); AQA UAS science units Records what was observed, and at which level of independence.
Pupil
____________________
Lesson
Levers, Pulleys and Gears β GROW Science Β· Week 4
Date
____________________
Observed in this lesson
β Named lever, pulley and gear with one example each.
β Identified the pivot correctly.
β Stated both the gain and the cost of a mechanism.
Assessor comment
Ring the tier the pupil actually worked at
β Supported
β² Standard
β Stretch
Assessor name ______________ Role ____________ Signature ______________ Date ________
Lundy Loop
Space: Loads and masses get dropped. Feet clear of the bench, and tell me if the weight is too much to handle safely.
Voice: Point, sign, say or show one observation, question or access need. You may pass or speak privately.
Audience: Tell the adult teaching this lesson, or ask a chosen partner to help you pass on the message.
Influence: The adult says what can change now, makes one agreed change if possible, and explains any limit. Check whether the change helped; no display or sharing is assumed.
Closing the loop: this one ends on paper — your own hand, or your words scribed by an adult. Saying it aloud starts the loop; writing it is what closes it. Pass is always allowed.