These exercises and activities are for students to use independently of the teacher to practice number and measurement skills.

Design and use models to solve measuring problems in practical contexts.

Multiplication and division, AP (Stage 8)

### Prior knowledge

Use decimals in calculations

Round answers appropriately

Substitute into formulas

Measure accurately to the nearest mm

### Background

In this activity students explore the relationships between body measurements. They learn to express the relationship as a formula.

#### Comments on the Exercises

**Exercise 1**

Asks students to measure their height and length of 3 major bones and look for relationships or patterns between the numbers.

**Exercise 2**

Asks students to explore the formula for height.

**Exercise 3**

Asks students to explore the accuracy of the height formula.

**Exercise 4**

Asks students to explore the relationship between foot length and height.

**Exercise 5**Asks students to investigate a conjecture related to the formula.

**Exercises 6 and 7**

Asks students to generate their own formula to predict a person's height using lengths of specific bones.

**Exercise 8**

Asks students to explore the relationship between hand lengths and foot lengths and relate this to height.