Week Three - Mane 3rd Mei

Today we looked at using algebraic formulas. These are useful in science, maths, economics, and many other subjects.

In a formula each letter represents some information. It is important to know what each bit means. For example in A = 1/2 b x h, A represents the are of a triangle, b represents the base length of the triangle, and h represents the height in the triangle.

We follow certain steps when we use formulas. Question - what was the velocity of a car if it traveled 300km in 4 hours?

1. Write out the formula e.g. v=d/t
2. Work out what each letter means - v = velocity, d = distance, t = time
3. Substitute into the formula d = 300, t =4 so v =300/4
4. Calculate and give units if needed v = 75km/h

Homework: 7.05