Puddle depth survey

What you need

• A straight stick
• A ruler or tape measure
• A clipboard or folded paper
• Wellies

How to do it

1. 1

   Find five puddles and give each one a name.

2. 2

   Dip the stick in, mark the wet line with your thumb and measure it against the ruler.

3. 3

   Record every depth on your chart.

4. 4

   Predict which puddle will dry up first and why.

5. 5

   Come back a few hours later and check who was right.

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