My students love these number puzzles. They are a great way to practice different strategies for adding and subtracting two-digit and three-digit numbers. They help students play with decomposing numbers to build addition and subtraction math strategies for second grade.
Sites that I can't do without as a math teacher (and what's so special about each one!) Links to virtual manipulatives, discovery-based lessons, free graphing software, question prompts, eBooks, and more.... Tons of resources for math teachers
Discover 10 ways to teach math using post it notes here There are ideas for teaching addition, even and odd numbers, fact families, comparing numbers, rounding, fractions, decimals, area and graphing. Sticky notes help make learning interactive and fun!