Illustrative Mathematics
3-D Shape Sort
From the apple on your desk and the coffee cup in your hand, to the cabinets along the classroom wall, basic three-dimensional shapes are found everywhere in the world around us. Introduce young mathematicians to the these common figures...
Curated OER
Sediment Sleuths
Are you looking for a good, solid lesson on sedimentary rocks? This one, produced by the Illinois State Museum, is just such a lesson. Middle schoolers identify common rocks and minerals by analyzing sediments from local water sources....