Khan Academy - Math, Science & Humanities Video Tutorials & Exercises
Over 1,800 10 minute online tutorials in all aspects of math from arithmetic through algebra, geometry, trigonometry, calculus and advanced linear algebra to statistics, finance, biology, chemistry, physics, and test preparation.
Place Value and Everything in Its Place
This unit "starts a new school year positively with review, and new learning of place value concepts." Strategies include visualization, use of manipulatives, games, Brain POP, essential questions, and songs. Correlates with the NAD Math Curriculum...
What Kind of Math?
Grade 2-Grade 6
For students struggling to grasp our base ten number system, poker chips can be a helpful tool.