SME
Kindergarten Science · Life Science
Needs of plants and animals
Use this for “How many more plants stayed green with water?”
Picture
Plants still green, watered has 6 more.
Plants still green, not watered has 6 fewer.
Each line joins a pair. The extras have no partner.
This is an example. Type the numbers from your problem to start.
Plants still green, watered
example
Plants still green, not watered
example
More with water
answer
Number sentences
10 − 4 = 6
Good to know
•
Plants need water and light. Animals need food and water.
•
Put 10 small plants in each tray. Water one tray only.
•
After a week, count the plants that are still green.
Step-by-step
WE KNOW
Plants still green, watered: 10
Plants still green, not watered: 4
FIND
more with water
Step 1 · Find more with water
10 − 4 = ?
Count on from the smaller number to the bigger one. That is how much more.
10 is more than 4 (the watered tray)
Count on from 4: 5, 6, 7, 8, 9, 10 → 6
More with water: 6
Check
Put the numbers back in. Both sides should match.
10 − 4 = 6 ✓
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