Better Lesson
Better Lesson: Count by 10's Review
Numbers don't stop at 20! This lesson plan looks at the numbers beyond 20 through a fun game. This lesson plan includes a detailed plan, links to center ideas, a review video, and a printable worksheet.
National Council of Teachers of Mathematics
Nctm: Figure This: Which Is Worth More, a Smile or a Frown?
Solve for the value of the smiles and frowns to find out how much a smile is worth, in this activity. A challenge that focuses on number sense, number combinations, and unknowns. Included are examples of how this skill is applied in real...