1. An Introduction to Equations Slideshow 17, Mathematics Mr Richard Sasaki Room 307

2. Objectives

3. What does ‘=’ mean? Yes, equals. So what does equals mean? The equals symbol is the centre of equations.

4. Comparing Amounts A way to compare amounts of things is with the use of balancing. If the balance is level, the amounts are equal. = This is a theoretical balance, it is not meant to be realistic. Please assume all items on the balance are equal distance from the pivot.

5. Equal Balances Let’s try solving for some unknowns on the balances (which are level). = = Please be open-minded about negativity! =

6. Answers - Easy

7. Answers - Hard

8. Equations What we have been doing so far is basically decorated equations. Let’s look at how we got from our equations to our answers.

9. Equations

10. Answers – Very Easy / Easy

11. Answers – Medium / Hard