Read Works
Read Works: Classify and Categorize Kindergarten Unit: Adding to Sorted Groups
[Free Registration/Login Required] A lesson using the book My Big Animal Book by Roger Priddy in which students learn to sort items into predetermined categories. Ideas for teaching, guided practice, and independent practice are...
Khan Academy
Khan Academy: Categorize Quadrilaterals
Classify and compare rectangles, rhombuses, and squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.G.A.1 Understand that shapes in...