The document discusses the importance of calcium for strong bones. It notes that calcium comes from foods like milk, cheese, broccoli, salmon, and yogurt. The document instructs readers to observe a chicken bone before and after soaking it in vinegar for five days to see how a lack of calcium can cause bones to become weak and flexible over time.

1. Families we need
Some help!

2. Our bones need CALCIUM.
CALCIUM makes our bones hard and strong
CALCIUM

3. FOODS WITH CALCIUM
BROCCOLI
MILK CHEESE
SALMON
YOGURT

4. What happens if our
bones don't have
enough calcium?
You need:
A bowl
A Chicken bone Vinegar

5. 1. Observe the bone.
2. Put the bone in a bowl with some vinegar.
3. Leave the bone for five days.
4. Take the bone out of the vinegar.
5. Observe the bone.

6. Write and choose your comments:
Before
The chicken bone was hard/squishy.
The chicken bone was yellow/white/black.
The chicken bone was rigid/flexible.
The chicken bone had enough calcium/didn't have enough
calcium.

7. Now
The chicken bone is hard/squishy.
The chicken bone is yellow/white/black.
The chicken bone is rigid/flexible.
The chicken bone has got enough calcium/
hasn't got enough calcium.