**I. From 5th grade ****Math Trailblazers Student Guide****, Unit 9, lesson 6: Calculator Strategies: Addition and Subtraction of Fractions, final problem set** (p. 321) [click to enlarge]:

**II. From the 5th grade Singapore Math,**

**Primary Mathematics 5B****, Fractions chapter, about half-way through**(pp. 58-59) [click to enlarge]:

**III. Extra Credit:**

What are Singapore Math students missing out on by never receiving direct instruction in "calculator strategies"?

When it comes to calculator strategies, which is better: direct instruction, or child-centered discovery?

## 1 comment:

Would you mind sending me email so I can correspond with out about something to do with Singapore math?

jenny@sngaporemath.com

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