Dara

This SMART Board presentation is for students who are first learning how to subtract a one-digit number from a two-digit number and need to regroup. Base ten blocks are used in the eight slides to illustrate the problem 42-8 =. Students will clearly see the ten block being brought over to the ones column in order to have more in the ones column in order to subtract correctly. The base ten block slides follow the work mats featured in the Harcourt second grade mathematics workbooks but this pr