Did you know why ancient people chose 12 for the number of months in a year, and 360 for the number of degrees in a **full revolution**? It all has to do the moon, with the sun and with **factors**!

In this activity, we will also learn about how how the **30x and 45x tables** help us with** clock angles** and **compass angles** and all about **acute, right, obtuse, straight** and **reflex** angles.

In this activity we will have a great investigation into the **angles** inside a **triangle**, **square** and **hexagon**.

Then we will see if we can find **triangles** inside all these different shapes.

Finally, we will learn about the **interior angles** of different **polygons**.

The best way to understand how positive and negative numbers work is to use a number line. The line can either go **vertically** or **horizontally**.

In this activity, you have to see if you can place the numbers correctly on the lines on the sheet.

**IMPORTANT: THIS ACTIVITY IS NOT READY YET. THE VIDEOS ARE NOT FINISHED. LET ME KNOW IF YOU WOULD LIKE TO TRY IT AND I WILL MAKE THEM FOR YOU.**

In this activity, we are going to find out where points end up if we make coordinates negative or positive.

Then we find out how to use coordinates to make **points go i**n **vertical lines**, **horizontal lines** and **diagonal lines.**

In this activity we learn how to play with coordinates to make **triangles** **reflect** **horizontally**, **vertically** and **diagonally**.

Then we make them **rotate**!

After that we do the same thing with **quadrilaterals**.

Great fun!

‘Per’ means ‘out of’.

‘Cent’ means ‘100’.

So ‘percent’ means ‘out of 100’.

**100 percent **means 100 out of 100 which means the **whole** of something.

If you know 100% you can easily work out 50%, 25% and 75% of different numbers.

We can then go on to work out other percentages.