**Teens and Ten strips**

**Focus: **Building an understanding of the construction of teen numbers, with particular reference to the ten and ones structure.

**How: **Before the game begins, the teacher places a paper clip on a number, somewhere along the 10 to 20 number line. Players then take turns to create numbers between 10 and 20. A turn consists of a player spinning the top spinner, then placing the indicated number of unifix or multilink cubes on the ten-strip. The player then spins the lower spinner and takes the indicated number of cubes, using some of these to fill the remaining squares in the ten-strip and placing the remainder into the circle next to the ten-strip. Students have to quickly deterimine the total number of cubes (the ten in the ten-strip plus the remaining ones). They then place one of their spare cubes (of an agreed colour) below the corresponding number on the number line. The first student to get one number higher than, and one number lower than the number indicated by the paperclip is the winner.

*Download Teens and Ten Strips board*

*Download Double Ten Frames Spinners*

*Download Teens and Ten Strips number line*