Category Archives: Math Resources

Math: Ch. 9-Properties and Equations

We hope that everyone had an enjoyable Winter Break. We are excited to meet with everyone at our upcoming SEP Conferences. If you have not selected your appointment time please contact your child’s teacher.

Our next math unit has some new ideas for your students to learn. This unit focuses on Properties and Equations. It is a beginning of algebraic equations for our students as well as working on two-step story problems.

We start the unit by taking a multiplication problem and decomposing it into two different problems. I.e. 8 x 7 = (8 x 4) + (8 x 3). This is known as the distributive property. We will explain how we do what is in the parentheses first and then what is outside. I.e. 8 x 7 = (32) + (24). 8 x 7 = 56.

We will then move to multiplying 3 factors. I.e. 2 x (3 x 3). First we solve the problem in the parentheses 2 x (9). Then we finish the problem with the answer being 18. This will lead us to the Associative Property of Multiplication which states that the grouping of factors does not change the product.

Then we will start working on writing expressions. This is having the students read story problems and then decide what operation to use (add, subtract, multiple, or divide). Then we will evaluate expressions which means that we will put in a letter to represent a variable. I.e. 3 + S x 4. Solve if S = 2. 3 + 2 x 4. 3 + 8 (if there are no parentheses then we multiply first). 3 + 8 = 11.

The final concept will be taking these equations and use them to solve two-step story problems. For example: Orion has 48 comic books. He keeps 8 for himself and divides the rest equally among his friends. If each friend gets 8 comic books, to how many friends did he give comic books?
(48 – 8) / m = 8
(40) / m = 8
m = 5

Please let us know if you have any questions or if there is anything we can do to help your student.

Math Chapter 6

For the month of October we have been working the concept of understanding what is multiplication and division. During the months on November and December we will be working on multiplying and dividing. This chapter will focus on multiplying and dividing numbers 2, 5, and 10.

We will start doing 1 minute time tests on Monday. The order we will have the students pass off these times tests will go as follows: 2, 5, 10, 3, 4, 1, 6, 7, 8, and 9. These test results will be on your child’s next report card. Please practice math facts at home either with flash cards, with a computer game, or with an app.

Please let us know if you have any questions!!

Math Chapter 5

This chapter is an introduction to division.  We are trying to teach the students to think of division of repeated subtraction of equal groups just like we think of multiplication and repeated addition.  We will be using a lot of modeling to show the students this concept.

There is a lot of new vocabulary for this chapter. There is divide, dividend (number being divided 15/3=5), divisor (number divided by 15/3=5), quotient (the answer 15/3=5), fact family (3×5=15, 5×3=15, 15/3=5, 15/5=3) and inverse operations (3×5=15, 15/3=5).

Here is a link to the pre-test so you can see what we are working toward being able to do.  If you have any questions please let us know!!

Thanks,

3rd Grade Teachers

 

Math Chapter 4

On the sidebar under math you will notice a couple of new links. There is one for the multiplication flashcards. Learning multiplication is an important skill that your child will learn at home. Any practice of these facts at home would be a great help for your student. The other link if for the homework pages in case your students misplaces their homework between school and home.

Our math focus for the next two weeks will be on understanding multiplication as repeated addition. There will be some vocabulary that is new to your students.
Array: Objects or symbols displayed in rows of the same length and columns of the same length.
Equal Groups: Groups with the same number of objects
Factor: A number that is multiplied by another number.
Multiply: An operation on two numbers to find their product.
Product: The answer to a multiplication problem.

In the post below there is an example of the pre-test that the students will take tomorrow with the answer key. If you have any questions about what we are working on in class please let your child’s teacher know. We are here to help!