Activity 01
Pairs: Sink or Float Challenge
Pairs select classroom objects and predict if each sinks or floats, recording on a T-chart with reasons. They test in a shared water tray, observe results, and note matches or surprises. Pairs share one key learning with the class.
Explain what a prediction is in science.
Facilitation TipDuring Sink or Float Challenge, hand each pair a small whiteboard so they must write one prediction and one reason before touching any water.
What to look forShow students two objects, like a stone and a leaf. Ask: 'What do you predict will happen when I put these in water?'. Then ask: 'Why do you think that will happen?'. Record their predictions and reasons.
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Activity 02
Small Groups: Ramp Car Predictions
Groups predict which toy car rolls farthest down a ramp, based on size or wheels. They test three cars, measure distances with a ruler, and adjust predictions for a second ramp height. Groups compare results on a class board.
Make a prediction about the outcome of a simple test.
Facilitation TipFor Ramp Car Predictions, give each small group a ramp angle card (10°, 20°, 30°) they must use to set their ramp before predicting which car will roll fastest.
What to look forGive each student a card with a simple test, such as 'Will a crayon float or sink?'. Ask them to write their prediction and one reason for it on the card. Collect the cards to see their initial ideas.
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Activity 03
Whole Class: Ice Melt Timer
As a class, predict and time how long ice cubes take to melt in sun versus shade spots. Children vote on predictions first, then track with timers and charts. Discuss factors like warmth at the end.
Justify why your prediction might be correct or incorrect.
Facilitation TipIn Ice Melt Timer, ask each child to sketch their prediction of the ice shape on a class poster before the timer starts.
What to look forAfter a simple test (e.g., rolling different balls down a ramp), ask: 'Was your prediction correct?'. Then prompt: 'Tell me why your prediction was right or wrong. What did you learn from the result?'.
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Activity 04
Individual: Shadow Length Guess
Each child predicts if a toy's shadow grows or shrinks as a torch moves closer or farther. They test at their desk, draw before-and-after shadows, and write a one-sentence reason for the change.
Explain what a prediction is in science.
Facilitation TipDuring Shadow Length Guess, have students trace their partner’s shadow with chalk to make their prediction visible and measurable.
What to look forShow students two objects, like a stone and a leaf. Ask: 'What do you predict will happen when I put these in water?'. Then ask: 'Why do you think that will happen?'. Record their predictions and reasons.
UnderstandApplyAnalyzeSelf-AwarenessRelationship Skills
Generate Complete Lesson→A few notes on teaching this unit
Teachers guide children to make predictions first, test next, then reflect on the match or mismatch. Avoid correcting too quickly; instead, ask, 'What did you see that made you think that way?' Keep the focus on evidence rather than correctness. Research shows this cycle builds stronger scientific habits than isolated fact memorization.
Children will explain their predictions using observations or prior experience, listen to others’ reasons, and revise ideas after testing. They will value both right and wrong predictions as steps toward better understanding.
Watch Out for These Misconceptions
During Sink or Float Challenge, watch for children who pick objects randomly without reasons.
Ask each pair to hold up their written prediction and reason before testing. If a reason is missing, prompt with, 'What have you seen before that makes you think that?'
During Ice Melt Timer, watch for children who believe all ice melts at the same speed.
After the test, have groups compare their posters to see whose ice melted fastest and whose took longest, then ask, 'What else could change the melting time?'
During Shadow Length Guess, watch for children who think shadows stay the same size all day.
Before testing, ask, 'What happens to the sun’s position from morning to afternoon?' Have students mark their predictions on the poster with arrows showing expected changes.
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