Tuesday, February 19, 2008

Everyday Math

We will be having math quizzes on Wednesdays over the content discussed during the previous week.

Unit 9 is a longer unit - Concepts covered will be:
- Multiply and Divide with Multiples of 10,100, and 1,000
- Using mental math to multiply
- Using arrays to multiply
- Modeling Multiplication with Base 10 Blocks
- Multiplication Algorithm (Partial Sums)
28
x 4
______
(4) 20's = 80
+
(4) 8's = 32
___________
112
- Finding Factors of a Whole Number
- Sharing Money (Ex: $1.00 shared equally among 4 people, $71 shared equally among 5 people, etc.)
- Lattice Multiplication! (Look for an explaination of this to come home!!! This is a VERY fun way to learn mutliplication! I love it! It's different, but it is very interesting! Have your students teach you how to do it (have an open mind) and you'll like it too!)
- Products of 2 digit multiplication
- Positive and Negative Numbers
- Practice area and perimeter for our test



Please continue practicing multiplication facts at home. Ask your child what timed tests he/she has passed. To pass a timed test, students must correctly answer 25 out of 30 questions in one minute. Students will need to be passing these tests. Those students who have not mastered their facts will have written homework to help the students practice their facts. Practicing multiplication facts for a few minutes each night (focusing on the facts that have not been mastered) is very helpful! Students can practice ANYWHERE! As your child facts while in the car, while standing in line at a store, while you are making dinner or doing chores, before your child is able to play video games, or anywhere else that you can think of. This does not have to something that is written down or even done with flash cards - they can be asked outloud. Practicing a few facts every day will really, really help!

Counting change by "Counting up"
Ex: An item costs $1.37 and the person who buys the item gives the cashier $2.00. To find out the change start at $1.37 and count up to $2.00
Start with pennies (unless you are at 5 or 10 cents)
Use 3 pennies to get to $1.40. Then use a dime to get to $1.50. Last, use two quarters to get to $2.00.
To find the change, count 3 pennies, 1 dime, and 2 quarters. The change given is 63 cents.

- Check the links on the blog for math games online!

(This information can be found in the Math Book (Student Resource Book)). It can be taken home any night that you like to look up this information.


http://everydaymath.uchicago.edu/parents/index.shtml