Different tiles (or 'coins') represent different letter combinations.[br][br]Tiles that are [i]like[/i] have the same letter combinations. [i]Like[/i]-tiles have the same value as each other.[br][br]A [i]term[/i] is made by collecting like-tiles together.[br][br]The [i]coefficient[/i] of each term is the number of like-tiles.[br][br]An [i]expression[/i] is made by adding all the terms together.[br][br]The expression is [i]evaluated[/i] by substituting a value for x and for y.[br][br]There are 9 activities in this lesson. It is possible to complete this activity without a calculator.[br][br][br]

'Task 1' shows like-tiles gathered together. Calculate the total. check the box to see if you are correct.

In these activities each kind of tile has a different value. The value is determined by the letter combination. The tiles with the same letter combinations are like and can be grouped together.