Looking for ideas to help your teaching?
What’s in your top drawer?
Rummage through these drawers for
  • expert advice
  • teaching suggestions
  • classroom activities
or SEARCH for key words

Media > TDT > Mental computation > MC_GT_T1_E5_A2_fig1

MC_GT_T1_E5_A2_fig1

« 
Previous image
|
|
Next image
 »

A pair of counting strips marked from 1 to 15, the upper one showing the difference between 8 and 13 and the lower the difference between 10 and 15. Finding the difference between 8 and 13 is harder than finding the difference between 10 and 15.

Related content

MC_GT_T2_E4...

MC_GT_T2_E4...

MC_GT_T2_E4...

MC_GT_T2_E1...

MC_GT_T2_E1...

MC_GT_T2_E1...

MC_GT_T2_E1...