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Estimate and Measure Craft

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Estimate and Measure Craft

Year 3/4 Maths — Length Measurement

Student measuring with a ruler

📏 Part 1: Estimate First!

Before you measure anything, make your best guess. There are no wrong estimates — just give it a go!

Key words: estimate = your best guess | measure = using a ruler to find the exact length | cm = centimetres | mm = millimetres

1. Look at the ribbon (or strip of paper) on your desk. Without measuring, estimate how long you think it is.

My estimate: _________ cm

How did you decide? (Circle one)

I compared it to my hand span

I compared it to my ruler

I just had a feeling

I compared it to something else in the room

2. Estimate the length of your craft stick (or coloured strip).

My estimate: _________ cm

3. Estimate how long a piece of string would need to be to go around your wrist.

My estimate: _________ cm

I think this because: _______________________________________________

📐 Part 2: Now Measure!

Use your ruler carefully. Line up the zero end with the start of the object. Read the number at the other end.

4. Measure the ribbon (or strip of paper) using your ruler.

Actual measurement: _________ cm and _________ mm

Was your estimate close? (Circle one)

Spot on! 🎯

Pretty close (within 2 cm)

A bit off (more than 2 cm away)

5. Measure the craft stick (or coloured strip) using your ruler.

Actual measurement: _________ cm and _________ mm

Difference between my estimate and measurement: _________ cm

6. Measure around your wrist using the string, then lay it flat and measure it with your ruler.

Actual wrist measurement: _________ cm

Was your estimate longer or shorter than the real measurement? (Circle one)

My estimate was longer

My estimate was shorter

My estimate was exactly right

💭 Part 3: Think and Reflect

7. Why is it important to measure your materials instead of just guessing?
8. What is one thing you would do differently next time to make a better estimate?
9. Draw your completed craft item in the box below. Label at least one measurement on your drawing using cm or mm.

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