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## Use models to understand division as the inverse of multiplication, partitioning, and repeated subtraction. (0406.2.10)

1. Activities at Illuminations - Illuminations has 100 online activities available. Select which types of activities you are looking for, and click Search.
2. Base 10 Blocks
1. Adding With Base 10 Blocks - [2:34] video on using base 10 blocks
2. Base 10 - build blocks to create numbers with tens and ones - reinforces tally marks, number line, base ten blocks, and allows hundred blocks
3. Base 10 Blocks - virtual manipulative
4. Division as Repeated Subtraction.- [5:13] video on using base 10 blocks
5. Division Using the Scaffolding Method - [5:23] video on using base 10 blocks
6. Exploring Whole Decimal Numbers - using base 10 blocks
7. Lattice Multiplication - [2:55] video on using base 10 blocks
8. Multiplication as Repeated Addition - [3:46] video on using base 10 blocks
9. Multiplying with Base 10 Blocks  - [10:26] video on using base 10 blocks
10. Multiplication with Partial Products  - [6:54] video on using base 10 blocks
11. Pattern Blocks Program - exploring fractions with shapes - use tools to solve a variety of problems
12. Representing Numbers with Base 10 Blocks - [5:09] video on using base 10 blocks
13. Subtracting With Base 10 Blocks - [7:30] video on using base 10 blocks
14. Using Base Ten Blocks to "See" Algorithms - [5 pages] The activity is designed to make connectionsbetween the use of manipulatives and the development of algorithms.
3. Electronic Examples - index of manipulatives from NCTM [preK through grade 12 activities are available at this site]
4. GeoBoard - Use this virtual geoboard to explore geometric concepts of area and perimeter
5. GeoBoard - an extremely versatile manipulative that can be used by students at many different grade levels, to support a great many mathematical concepts
6. Hand Made Manipulatives - instructions for a variety of manipulatives
7. Integer Bars - interactive applet
8. Integer Bars - lesson plan which includes an applet with Integer or Cusinaire Bars
9. Math Playground - a small but growing collection of manipulatives for teaching and learning
10. National Library of Virtual Manipulatives - select topic and grade level to find appropriate manipulatives
11. Pattern Blocks Program - use tools to solve a variety of problems
12. Tangrams - interactive geometric site
13. Thinking Blocks - (an engaging, interactive math tool to help students learn how to solve multi step word problems; addition & subtraction, multiplication & division, and ratio & proportion) Thinking Blocks encourages students to look beyond the surface to discover the concepts and relationships that are at the core of every math problem.
14. Virtual Manipulatives - a list of various manipulatives for grades 1-6
15. Wolfram Demonstrations Project - a free resource of interactive visualizations from elementary education to the frontiers of research

 site for teachers | PowerPoint show | Acrobat document | Word document | whiteboard resource | sound | video format | interactive lesson | a quiz | lesson plan | to print

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