Estimating with Lentils and Popcorn Kernels

First Graders learned about estimating using lentils and popcorn kernels on Wednesday. They filled a small cube with the lentils or kernels and made an estimate of how many the cube could hold.  They then had to count them in two different ways to find the actual total and see how close their estimates were.  Estimating was harder than they thought it would be!