1 / 23

Teaching for Understanding Division with Fractions

Teaching for Understanding Division with Fractions. Dr. DeAnn Huinker, Dr. Kevin McLeod, Dr. Henry Kepner University of Wisconsin-Milwaukee Math Teacher Leader (MTL) Seminar Milwaukee Public Schools June 2005. Session Goals. Deepen conceptual understanding of division with fractions.

jana-bennett
Télécharger la présentation

Teaching for Understanding Division with Fractions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Teaching for UnderstandingDivision with Fractions Dr. DeAnn Huinker, Dr. Kevin McLeod, Dr. Henry Kepner University of Wisconsin-Milwaukee Math Teacher Leader (MTL) Seminar Milwaukee Public Schools June 2005

  2. Session Goals • Deepen conceptual understanding of division with fractions. • Examine “why” we can invert and multiply.

  3. Popcorn PartyServing Size: 2 cups How many servings from: • 8 cups of popcorn • 5 cups of popcorn

  4. Summarize • Write the equation for each situation (8 cups; 5 cups). • Identify the meaning of each number in the equations.

  5. 12 SummarizeHow many 2–cup servings? 8 ÷ 2 = 4 cups cup servings serving 5 ÷ 2 = 2 cups cup serving servings

  6. 12 What does the represent? • One-half of a cup of popcorn? • One-half of a serving? • Are you sure?

  7. 12 12 Popcorn PartyServing Size: cup How many servings from: • 1 cup of popcorn • 4 cups • 2 cups

  8. 12 12 SummarizeHow many 2–cup servings? cup serving 1 ÷ = 2 cup servings 4 ÷ = 8 cups servings cup serving

  9. TaskPopcorn Parties #1 &#2 • Facilitator • Paper Strip Demonstrator

  10. Algorithm

  11. TaskPopcorn Parties #1 &#2 • Facilitator poses one problem at a time. • Each individual silently solves it. • On facilitator’s cue: State answer. • Demonstrator models with paper strips. • Take turns to justify your reasoning.

  12. Popcorn Party #1 Serving Size: cup of popcorn How many servings can be made from: • 1 cup of popcorn • 2 cups of popcorn • 3 1/2 cups of popcorn 1 4

  13. Popcorn Party #2 Serving Size: cup of popcorn How many servings can be made from: • 3/4 cup of popcorn • 6 cups of popcorn • 2 1/4 cups of popcorn • 4 1/2 cups of popcorn 3 4

  14. 34 Popcorn PartyServing Size: cup How many servings from 4 cups?

  15. 34 SummarizeHow many 2–cup servings? cup serving 4 ÷ = cups

  16. Discussion In reviewing these division situations and your solutions, what are you noticing?

  17. 34 X = 1 ?

  18. 7 ÷ 8 =

  19. 1224 12 12 • = 1

  20. 34 SummarizeHow many 2–cup servings? 5 ÷ =

  21. 34 5 • = 1

  22. 34 92 • = 1

  23. 34 92 • = 1

More Related