1. Technology in the Middle School Mathematics Class Chapter 6

2. 7/10/2016copyright 2006 www.brainybetty.com 2 Calculators They are to assist not to replace knowledge. Tool for helping students solve problems. Eliminates tedious computations that may discourage students. Research shows that they enhance student learning when used appropriately. Should not replace all algorithms and all pencil-and-paper calculations.

3. 7/10/2016copyright 2006 www.brainybetty.com 3 Picking the Right Calculator Middle school calculator should have these minimum requirements: –Algebraic logic (follows PEMDAS) –Exponent key (to do powers and square roots) –At least one memory –Straightforward way to clear all memory and programs –Fraction and decimal capabilities

4. 7/10/2016copyright 2006 www.brainybetty.com 4 Teaching and Calculators One of your functions as a MS teacher is to help students learn when it is appropriate to use calculators, mental math, or paper-and-pencil algorithms. Sometimes a calculator is essential. Students need to be taught what their calculators are capable of doing and how individual keys work

5. 7/10/2016copyright 2006 www.brainybetty.com 5 Do These 1.10 – 4 x 2 = 2.8 + 3 ∙ 2 3 = 3.8 + 6 – 4 = 4.8 + 2 ∙ 3 7 5.3 ∙ 4 2 – 16 = 6.17 – 9 + 8 ∙ 4 ÷ 16 =

6. 7/10/2016copyright 2006 www.brainybetty.com 6 Correct These 12 – 8 ∙ 1 + 7 = 32 8 – 15 + 6 ÷ 3 = 1 7 + 3 2 = 100 20 ÷ 7 – 2 + 5 2 ∙ 3 = 79 24 + 16 ÷ 8 – 4 = 1

7. 7/10/2016copyright 2006 www.brainybetty.com 7 Compute: Some people use the calculator and some use pencil-and-paper – listen to directions! 1.8 + 7 = 2.40 x 6 = 3.101 – 1 = 4.20 ÷ 5 = 5.54 x 10 = 6.100 x 54 = 7.6.75 x 10 = 8.7,854 x 10 = 9.7,854 x 100 = 10.7,854 x 1,000 = 11.9 x 9 = 12.7,568,234 x 0 = 13.854 ÷ 1 = 14.45 + 45 = 15.86 ÷ 86 =

8. 7/10/2016copyright 2006 www.brainybetty.com 8 But, sometimes calculators are handy :o) 1.56,246 + 376 = 2.857 – 435 = 3.2,467 x 16 = 4.8,642 ÷ 42 = 5.8.732 x 16.5 = Now let’s do “calculator activities” in the book (p. 75-76).

9. 7/10/2016copyright 2006 www.brainybetty.com 9 Internet Resources The Math Forum – http://www.mathforum.org nice site but most things costhttp://www.mathforum.org Cool Math – http://www.coolmath.com/http://www.coolmath.com/ –looks pretty good Math in Daily Life – http://www.learner.org/exhibits/dailymath/ http://www.learner.org/exhibits/dailymath/ –looks good Math Forum Middle School Teachers’ Place – lesson plans – http://mathforum.org/teachers/middle/ http://mathforum.org/teachers/middle/ –Good

10. Math Central – http://mathCentral.uregina.ca/ http://mathCentral.uregina.ca/ –looks good Interactive Mathematics Miscellany and Puzzles http://www.cut-the- knot.com/content.shtmlhttp://www.cut-the- knot.com/content.shtml - this one looks great Math Archives Teaching Materials - http://archives.math.utk.edu/teaching.html http://archives.math.utk.edu/teaching.html –looks good 7/10/2016copyright 2006 www.brainybetty.com 10

11. 7/10/2016copyright 2006 www.brainybetty.com 11 Computers Look at the software listed on page 80-81 Tool for evaluating software on pages 82-83