Embedded Files
NCTM Illuminations Lessons and Interactives
This website has hundreds of lessons plus interactives. Select the type of lessons that you want as well as the appropriate grade band, and click Search.
http://illuminations.nctm.org/Default.aspx
Lessons
- Let's Count to 5
- Toy Shop Numbers (1.NBT.1; 2.NBT.3)
- Let's Learn Those Facts
- Let's Count to 20
Interactives
- Deep Sea Duel The first person to choose a set of digit cards with a specified sum wins. You can choose how many cards, what types of numbers, and the level of strategy.
Illustrative Mathematics Project
A growing collection of mathematical tasks that are organized by standard for each grade level and illustrate each standard's important features.
http://wwww.illustrativemathematics.org
Thinking Blocks: Addition and Subtraction
Thinking Blocks are teacher-developed tools that link to the various problem structures. They use two-digit numbers and problems with multiple steps, including "compare," "part-part-whole," and "change" examples. Because the ideas are presented as games, viewing the introduction is a necessary preliminary for playing.
http://www.mathplayground.com/thinkingblocks.html
National Library of Virtual Manipulatives
- Diffy is a classic mathematics puzzle that involves finding the differences of given numbers.
- Base Blocks Addition and Base Blocks Subtraction use base-ten blocks on a place-value chart.
Primary Resources
A free forum for sharing teaching ideas and resources.
Jefferson Lab
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