Unifix cubes are a concrete representation of addition/number bonds. Building the bond with the Unifix cubes is what develops number sense. Great use for flash cards instead of looking for just memorization
Lego Fraction game: Love this example for students who are into Legos. This is a great way for students to learn commonly used fractions in an exciting way. It supports the NCTM standard of representing commonly used fractions.
Classroom Procedures- Talking Signal: I will indicate how much (or how little!) students are allowed to talk during class. They can check the Talking Signal during different activities to see what the noise level should be.