NumberNut
Number Nut: Numbers and Counting: Counting to 1,000
Follow the steps in the examples for place value to the thousands place and then practice the skills with the two interactive activities.
Illustrative Mathematics
Illustrative Mathematics: Roll & Build
The purpose of this task is to give students practice representing two-digit numbers with concrete objects to reinforce the meaning of the tens digit and the ones digit. Directions and materials needed are included in the lesson.