lesson plan on Addition & subtraction of integers
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This document provides an overview of adding and subtracting integers. It defines a number line and absolute value. It presents rules for adding and subtracting integers, including same sign add and keep, different sign subtract, and copying the sign of the higher number. Examples are given using algebra tiles and the number line. The document concludes with an activity called "Roll to Win" that has students practice adding and subtracting integers by rolling a die and flipping a coin to determine positive or negative values.
lesson plan on Addition & subtraction of integers
- 1. ADDITION & SUBTRACTION OF INTEGERS Prepared by: Cheryl M. Asia
- 3. Objectives: To add and subtract integers Memorize the rule in addition and subtraction of integers, Enjoy participating in the discussion.
- 4. A number line is a straight line with a "zero" point in the middle, with positive and negative numbers listed on either side of zero and going on indefinitely. Absolute value describes the distance of a number on the number line from 0 without considering which direction from zero the number lies. It is denoted by two bars ( I I ).
- 7. Add the following using algebra tiles: 1. 5 + (-7) = 2. (-4) + (-2) = 3. 9 + 12 = 4. 12 + (-3) = 5. 6 + 5 =
- 8. Subtraction of Integers To subtract signed numbers, add its additive inverse, for any real numbers (x) – (-y)= x + (y) (x) _ (+y)= x + (-y) Examples: a. 2- (-4) = ____ 2 + 4 = 6 b. (-4) – (-9) = _____ (-4) + 9 = 5
- 9. RULES IN ADDITION OF INTEGERS Row your Boat Tune… SAME SIGN ADD AND KEEP DIFFERENT SIGN SUBTRACT COPY THE SIGN OF A HIGHER NUMBER THEN IT WILL BE EXACT… (repeat 3x)
- 10. Activity: ROLL TO WIN! Materials: die, coin, and score card The goal of the game is to reach the score of 10 or -10. Both players start at 0. Player A throw a die, say 5 comes up, the same player flips a coin. If the head comes up 5 is positive, if the tail comes up 5 is negative. Player A then writes the score on the first box. Player A and B takes turns on throwing a die and a coin. If the first throw, Player A gets the score of 5 and the second throw a score of -6, his score now is -1, since 5 + (-6) =-1, it will be written on the second box. In the event that both have filled the boxes in the scorecard the score with the highest absolute value wins the game.
- 11. Good job students! Thank you for your cooperation!!!!