Science lesson plan · 1st grade (Year 2 in England) · 45 minutes
Choosing a measuring tool
Working scientifically
CCSS NGSS.SEP 3England: KS1 Working scientifically
Objective and success criteria
Students will: Choosing a measuring tool.
- I can answer questions on today's skill on my own, without help.
- I can explain each step and say why it works.
- I can check my answer and spot a mistake.
Before and after
Needs first: Observing with our senses
Leads to: Units of measurement; Planning a fair test
Materials: Simple equipment for a fair test, Results table template, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).
Warm-up · 5 min
- Quick retrieval from earlier learning (Observing with our senses). Students answer on mini whiteboards.
- Show answers together and note who needs support in the main task.
- Which sense would you use to notice the size of a puddle? (sight (eyes) / hearing (ears) / smell (nose) / touch (skin)) → sight (eyes)Prompt: Which part of your body would notice it?
- Which of these would you notice using sight (eyes)? (how many legs a beetle has / thunder in a storm / a flower's scent / smoke from a bonfire) → how many legs a beetle hasPrompt: Imagine doing each one. Which body part would you use?
- Sam looks at the sky each morning and writes down if it is sunny, cloudy or rainy. What is Sam doing? (guessing / observing and recording / building a model / measuring mass) → observing and recordingPrompt: Sam is looking and then writing down what he sees.
Hook · 5 min
- Show a simple experiment with one thing changed and ask what makes it a fair test.
- Share the objective: Choosing a measuring tool. Read the success criteria together.
I do: model it · 10 min
- Work through the example out loud, saying why you do each step, not just what you do.
- Example: Which tool would you use to measure how tall a sunflower has grown?
- Step 1: A ruler or tape measure measures length (how long, wide or tall).
- Step 2: So the answer is: a ruler or tape measure
- Answer: a ruler or tape measure
- Pause after each step and ask a student to say what comes next.
We do: guided practice · 10 min
- Do these together. Students try each step on whiteboards before you reveal it.
- Use the hints as prompts rather than giving the answer.
- Which tool would you use to measure how long a worm is? (weighing scales / a ruler or tape measure / a stopwatch or timer / a thermometer) → a ruler or tape measurePrompt: Is it a length, a temperature, a mass, a time or an amount of liquid?
- What could you measure with a thermometer? (how hot a cup of tea is / the width of a leaf / how much water a plant is given / how much juice is in a carton) → how hot a cup of tea isPrompt: What does this tool measure: length, temperature, mass, time or volume?
You do: independent practice · 10 min
- Students work on the student sheet. Circulate and check the first two answers of every student early.
- Students who finish: write a question of their own for a partner, with the answer.
The 8 questions are on the student sheet below, with answers in the key.
Exit ticket · 5 min
- Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
- What could you measure with a thermometer? (how warm the classroom is / how long a toy car takes to roll down a ramp / how long it takes to run 50 metres / how long a candle burns) → how warm the classroom isPrompt: What does this tool measure: length, temperature, mass, time or volume?
- Which tool would you use to measure how heavy a pet hamster is? (a ruler or tape measure / a stopwatch or timer / a measuring jug or cylinder / weighing scales) → weighing scalesPrompt: Is it a length, a temperature, a mass, a time or an amount of liquid?
Watch out for
- Everyday meanings of words getting in the way of the science meaning: define key words explicitly.
- Remembering facts without the reason: ask "why?" and "what is the evidence?"
Support and stretch
Support
- Review first: Observing with our senses.
- Use concrete materials: simple equipment for a fair test.
- Give the first step of each question, or a partly worked example to finish.
- Pair with a confident partner for the guided practice.
Stretch
- Move on to: Units of measurement; Planning a fair test.
- Explain a common mistake in writing and how to fix it.
- Write a word problem that uses today's skill, then solve a partner's.
Homework and more practice
Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-1.
Free lesson plan from eurekami.com/lesson-plan-builder