Making Predictions and HypothesesActivities & Teaching Strategies
Active learning helps students grasp prediction and hypothesis-making because it turns abstract thinking into concrete action. When children test ideas right away, they see how predictions connect to evidence and how hypotheses guide investigations. This hands-on approach builds confidence in using science language to explain their reasoning.
Learning Objectives
- 1Formulate a clear prediction for a simple science experiment based on a given question.
- 2Differentiate between a scientific prediction and an uninformed guess by providing justification.
- 3Construct a hypothesis for an investigation, using prior knowledge or observations as evidence.
- 4Evaluate the outcome of an experiment against a stated prediction and hypothesis.
Want a complete lesson plan with these objectives? Generate a Mission →
Pairs: Ramp Prediction Challenge
Pairs build ramps with books and test toy cars on different surfaces like carpet or foil. First, they predict which surface allows the fastest roll and justify with observations. Then, they time three trials per surface and compare results to predictions.
Prepare & details
Construct a clear prediction for a given experiment.
Facilitation Tip: In the Ramp Prediction Challenge, circulate and listen for pairs to explain their prediction before they test, reinforcing evidence-based statements.
Setup: Standard classroom seating; students turn to a neighbor
Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs
Small Groups: Dissolving Hypotheses
Groups hypothesise which solids dissolve fastest in water, such as sugar versus sand, based on particle size observations. They add equal amounts to jars, stir for one minute intervals, and draw conclusions. Discuss revisions to initial ideas as a group.
Prepare & details
Explain the difference between a prediction and a guess.
Facilitation Tip: During the Dissolving Hypotheses activity, ask groups to write their hypothesis on a sticky note before testing so you can quickly spot reasoning gaps.
Setup: Standard classroom seating; students turn to a neighbor
Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs
Whole Class: Shadow Length Predictor
Display a lamp and objects; class predicts shadow changes with light distance. Measure and record in a shared chart, then test predictions by adjusting lamp positions. Vote on best hypothesis and explain why.
Prepare & details
Justify a hypothesis based on prior knowledge or observation.
Facilitation Tip: For the Shadow Length Predictor, have students explain their prediction steps aloud as they measure shadows to strengthen their justification skills.
Setup: Standard classroom seating; students turn to a neighbor
Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs
Individual: Plant Growth Guess or Predict
Students observe seeds in pots and individually predict sprouting time based on watering differences. Track daily in journals, then share if predictions held and why. Compare to mere guesses from peers.
Prepare & details
Construct a clear prediction for a given experiment.
Setup: Standard classroom seating; students turn to a neighbor
Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs
Teaching This Topic
Teach prediction and hypothesis-making by modeling how to connect ideas to evidence, not just stating outcomes. Use sentence stems like 'I predict this because...' to scaffold reasoning. Avoid rushing to the test before students articulate their thinking. Research shows that slowing down to explain ideas first leads to stronger understanding and retention.
What to Expect
Successful learning looks like students justifying predictions with prior knowledge or observations instead of guessing. You will hear clear explanations linking outcomes to evidence, such as referencing past tests or class discussions. Students should also revise ideas after testing, showing they understand that science involves adapting thinking.
These activities are a starting point. A full mission is the experience.
- Complete facilitation script with teacher dialogue
- Printable student materials, ready for class
- Differentiation strategies for every learner
Watch Out for These Misconceptions
Common MisconceptionDuring Ramp Prediction Challenge, watch for students who make predictions without providing reasoning.
What to Teach Instead
Prompt each pair to explain their prediction using words like 'I think the car will roll fast because the ramp is steep,' and circle back if they only state outcomes without evidence.
Common MisconceptionDuring Dissolving Hypotheses activity, watch for students who treat hypotheses as fixed answers rather than testable ideas.
What to Teach Instead
Have groups write their hypotheses on sticky notes and post them before testing. After results, ask them to revise their notes if their idea changed, reinforcing flexibility.
Common MisconceptionDuring Plant Growth Guess or Predict activity, watch for students who skip justifying their predictions.
What to Teach Instead
Provide a template with a box labeled 'Why I think this' and require students to fill it before planting, then share with a partner to strengthen their reasoning.
Assessment Ideas
After Plant Growth Guess or Predict, collect student sheets to check if they wrote a prediction, a reason for it, and a hypothesis. Look for clear links between their prediction and prior knowledge.
During Ramp Prediction Challenge, ask students to hold up a card labeled 'Prediction' or 'Guess' after you pose a question. Listen to their verbal justifications to see if they tie their choice to evidence.
After Shadow Length Predictor, present two statements about a shadow experiment: 'I think the shadow will be longer because the sun is lower' and 'I think the shadow will be longer.' Ask students to identify which is a prediction with justification and explain their reasoning in small groups.
Extensions & Scaffolding
- Challenge: After the Plant Growth Guess or Predict activity, have students design a new test to check their hypothesis and present their findings to the class.
- Scaffolding: During the Dissolving Hypotheses activity, provide sentence frames for students who struggle, such as 'I think _____ will dissolve because _____.'
- Deeper: Use extra time to introduce a second variable in the Ramp Prediction Challenge, like testing different ramp heights to see how it affects outcomes.
Key Vocabulary
| Prediction | A statement about what you think will happen in an experiment. It is an educated guess based on what you already know or have observed. |
| Hypothesis | A proposed explanation for an observation or phenomenon, often stated as an 'if, then' statement. It is a testable idea that can be supported or refuted by evidence. |
| Justification | The reason or evidence given to support a prediction or hypothesis. This can come from prior knowledge, observations, or previous experiments. |
| Observation | The act of noticing and describing events or processes in a careful, orderly way. Observations help form predictions and hypotheses. |
Suggested Methodologies
Planning templates for Science
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
Unit PlannerThematic Unit
Organize a multi-week unit around a central theme or essential question that cuts across topics, texts, and disciplines, helping students see connections and build deeper understanding.
RubricSingle-Point Rubric
Build a single-point rubric that defines only the "meets standard" level, leaving space for teachers to document what exceeded and what fell short. Simple to create, easy for students to understand.
More in Working Scientifically: The Young Researcher
Formulating Scientific Questions
Students will learn to turn their curiosity into testable questions that can be answered through investigation.
2 methodologies
Identifying Variables
Students will identify the independent, dependent, and control variables in simple practical inquiries.
2 methodologies
Conducting Fair Tests
Students will plan and set up simple practical inquiries and comparative tests, ensuring conditions are fair by changing only one thing at a time.
2 methodologies
Collecting and Recording Data
Students will collect data accurately and record it using simple tables, tally charts, and drawings.
2 methodologies
Interpreting and Presenting Results
Students will interpret their results and present findings using scientific language, drawings, and simple graphs.
2 methodologies
Ready to teach Making Predictions and Hypotheses?
Generate a full mission with everything you need
Generate a Mission