simple number recognition for preschoolers- could also do with smarties or m&m's
DIY Dice Games for early maths skills
Maths activity of counting beads on a pipe cleaner. Great for developing number and fine motor skills. Laughing Kids Learn
PI83 Graphing Calculator App: Like the TI83, but much cheaper!
DIY Clothespin Number Line...hands-on way to practice number recognition and number sense concepts with kids.
Lego Math: How many Legos does it weigh?
Shapes Geometry for Preschoolers/Apply transformations and use symmetry to analyze mathematical situations: recognize and apply slides, flips, and turns