From Geometry to Numbers in the Teens

We finished a geometry unit before the spring break. You will see children matching the faces on different shaped blocks, building three-dimensional shapes with playdough, building an equivalent block with smaller blocks and copying structures made out of cubes.

When we returned we began a unit in which we are working with larger numbers. Children measured each other with cubes, with some going as high as 72 cubes. We have played Collect 15 and Collect 20, asking children to add each new number (after rolling a die with 1, 2 or 3 on it), while keeping track of their total until they get to 20. We are examining how people count a count of 21 objects and how they record their count, comparing different strategies on counting. When we copy a tile structure on our board, we talk about ways of grouping the tiles to create different combinations that equal the same number. Children are ready for so many more challenges this time of year. It's an exciting time in kindergarten!