Grades K–3
Which Is Heavier?
Predict which of two things is heavier, test them on a balance and record five pairs.
Science worksheet · Science tools and lab safety
Measure with a Ruler
Guess and then measure six things in centimeters and find how close each guess was.
- Grade level
- Grades 1–3
- Time
- About 20 minutes
- Answer key
- Not needed: answers vary
- Kids practice
- Science tools, Measuring, Lab safety
What kids do
Printed on the sheet:
- Measure it: line up the end of the object with the 0 on your ruler. Read the number where the object ends. Write the answer in centimeters (cm).
- I measured (cm)
- How far off was I?
Words on this sheet
Objecta pencila crayona glue stickmy handmy shoea bookLongest thingShortest thing
Teacher tip
Show where zero is on the ruler before kids measure.
How to use it
- Pass around each real tool before the sheet.
- Practice measuring with rulers and cylinders as a class first.
- Let partners compare answers and settle any differences with a book or a video.
Watch for
Starting a ruler at 1 instead of 0. Show where zero is.
Talk about it
- Why do scientists wear goggles?
- What evidence helped you choose your answer?
Take it further
Set up a measurement station with a ruler, a balance and a cylinder.
US Letter, prints well in black and white. Free for home and classroom use: print as many copies as you need.
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