tapping

these resources are based on Dave Hewitt's erudite work

there are youtube videos demonstrating uses of his software Grid Algebra:

• grid algebra use with younger students
• grid algebra 1 getting to know the grid
• grid algebra 2 movements
• grid algebra 3 introducing and using letters
• grid algebra 4 inverse operations and solving equations

the unplugged, 'tapping' version of this task is used here for work on expressions and simplification
it can also be used for quick number and  algebra practice and is simple enough to set up

some work needs to be done on analysing why a large expression can be reduced to a much simpler one