To help you meet this need we have created the Weekly Pack-It. Look to this site each week for new grade specific activities.
Students fill shapes with blocks.
They determine the quantity of blocks that fit inside the shape by counting the blocks and also by laying the blocks on a number line and reading the number. They write the number next to the shape outline. Each student fills a cup with blocks, packs the blocks as much as possible, organizes the blocks on a Place mat or Counter, and sets digits to show the number. Groups record their results and decide which student packed the greatest number of blocks. Finally, they use blocks to determine actual lengths by counting and packing.