We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published bySterling Lassetter
Modified over 5 years ago
Integers Adding and SubtractingBy: Micheal Stewart
The objective is the students will add and subtract integers with 75% accuracy using manipulatives.
A very effective approach to adding and subtracting integers is to use colored tiles or colored disks.
The reason I use red and black disk is because red generally represents positive and black represents negative with most wiring components.
Here is an example of how the colored disk can be used when adding integers.
Let the red disk represent the positive integers and the black disk represent the negative integers.
If we add 5+(-4) using our disk we can get a visual and tactile understanding of integers.
If one black disk cancels out one red disk, how many red disk are leftIf one black disk cancels out one red disk, how many red disk are left? ONE! The answer is positive 1.
The use of colored disk can be an effective manipulative when introducing integers to students.
The disks give the students a visual concept of adding and subtracting integers.
To help students visualize abstract concepts Introduce a new topic; students then can discover the algebra rules instead of being told by the teacher.
Let’s Do Algebra Tiles.
11-3: Subtracting Integers
Subtracting Integers with Tiles
Adding Integers with Tiles Student Expectations: 7 th Grade: 7.1.2C Use models, such as concrete objects, pictorial models, and number lines, to add, subtract,
Section 1.1 introduction — an exploration into:
Rational Numbers ~ Adding Rational Numbers
2.1 Integers & Absolute Value 2.2 Adding Integers.
Subtracting Rational Numbers
ADDING AND SUBTRACTING POSITIVE AND NEGATIVE INTEGERS.
Notes – Addition and Subtraction of Integers (with counting chips) We are learning to…add and subtract positive and negative integers with counting chips.
Integer Rules Adding Integers (+) + (+) = (+) A positive plus a positive is positive. (-) + (-) = (-) A negative plus a negative is negative. (+)
Adding Integers. Adding Integers with the Same Sign Add the absolute values. The sum will have the same sign as the addends. Example 1 Find –2 + (-3)
Positive and Negative Numbers
REMEMBER: A number can be negative or positive as shown in the number line below: Negative Numbers (-) Positive Numbers (+)
Adding Integers Assume there is a battle going on. The battle is between the good guys and the bad guys. If two good guys meet on the battle field,
Adding Integers. Negative Numbers Positive Numbers Negative numbers are the numbers less than zero (or to the left on the number line) Positive numbers.
Day 4 – Subtracting Integers. How to subtract integers with algebra tiles 1. Change the problem to addition Keep the first number the same Change.
© 2019 SlidePlayer.com Inc. All rights reserved.