Number Sliders — Teacher Size

Description

You will never need to say "Add a zero" again when you actually mean 10x larger! Using the words "add a zero" creates misconceptions and is a rule that fails when mulitpying and dividing by decimals.

The decimal point always remains between the ones and the tenths with the number sliding to the left or right for each power of 10.
For example to x 100, the number will slide of two places to the left and zeroes are written in to hold the place.

The strip used to slide the number across is designed to be written on with a white board marker which easily removed after use.

In the bottom of each corner is either "Left" or "Right" to reduce the cognitive load on learners when sliding a number; a slide in place value to the left is 10x and to the right is ÷10 (or x 1/10)