Singapore Math Training

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# Singapore Math Training - PowerPoint PPT Presentation

## Singapore Math Training

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1. Singapore Math Training

2. Singapore Model Drawing Method Alice earned money from tips from her waitress job. She put ¼ of the money in her savings account. She gave ¾ of the remaining money to the local food bank. She had \$12 left for herself. How much money did Alice earn in tips?

3. Let’s Get Started!

4. Step 1:Read the entire problem and underline the question. Alice earned money from tips from her waitress job. She put ¼ of the money in her savings account. She gave ¾ of the remaining money to the local food bank. She had \$12 left for herself. How much money did Alice earn in tips?

5. Step 2: Rewrite question as an answer statement. How much money did Alice earn in tips? becomes… Alice earned _________ in tips.

6. Step 3: Determine who and/or what is involved in the problem. Alice earned money from tips from her waitress job. She put ¼ of the money in her savings account. She gave ¾ of the remaining money to the local food bank. She had \$12 left for herself. How much money did Alice earn in tips?

7. Step 4: Draw a Unit Bar(s) Alice’s Tips

8. Step 5: “Chunk” the Problem Draw in information that you know 1/4 Alice’s Tips savings

9. Step 5: “Chunking”… Continue to fill in information that you know… 1/4 Alice’s Tips savings Remainder Can you see what each fourth is equal to in the bottom bar? Food bank contribution \$12 3/4

10. Step 6: Perform Calculations 1/4 Alice’s Tips savings Remainder Each fourth is equal to \$12, We use the calculation \$12 x 4 = \$48 So, we know the remainder was \$48. Food bank contribution \$12 \$12 \$12 \$12 3/4

11. Step 6: Perform Calculations Remainder(\$48) 1/4 Alice’s Tips savings \$16 \$16 \$16 On the top bar, the Remainder is divided into thirds. \$48 / 3 = \$16 Food bank contribution \$12 3/4

12. Step 7: Conclusion Remainder (\$48) 1/4 Alice’s Tips savings \$16 \$16 \$16 \$16 We see that each fourth on the top bar is equal to \$16. So, the total tips that Alice earned were \$16 x 4 = \$64 Food bank contribution \$12 3/4

13. Step 7: Conclusion Alice earned \$64 in tips. 1/4 Alice’s Tips savings \$16 \$16 \$16 \$16 Food bank contribution \$12 3/4

14. YOU TRY!(on a separate sheet of paper) • There are 600 people at a beach. 2/3 of them are men while the rest are women and children. 1/3 of the number of women equals to ½ of the number of children. If 1/10 of the women and ¼ of the children cannot swim, how many women and children can swim?