2 X 2-digit Multiplication

We are currently working hard on learning and practicing the process of multiplying up to 4 digits by 1 digit and 2 digits by 2 digits.  Just learning how to use the “old school” algorithm to solve the problem is no longer enough.  The kids have to be able to explain the process of why that “old school” algorithm works.  I’ve posted short video clips that help to show the multiplication process and what we are expecting the kids to understand and do.  Of course, it is extremely important that the kids learn and memorize their basic multiplication facts!

Multiplication with base ten blocks/area models:

 

“Grid /Window/Box” Method of multiplying 2-digit by 2-digit numbers:

The Process of Multiplication

Before the Thanksgiving holidays, we began reviewing the process of multiplying 2-digit numbers by 1-digit numbers.  We viewed the videos below to help us understand how we use the values of the digits to multiply.  Ask your child to teach you how to do this type of multiplication.  If he/she can teach it to you, then you  know he/she has learned it!

Share your career!

We’re looking for a few good people…

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Do you love what you do?  Does your job involve the use of any math skills?  Are you interested in sharing some details about your career with our 4th grade students?

We’re getting ready to begin a project-based learning unit that allows our students to discover the uses of math in the real world, and we are looking for some guest speakers to share some information about their careers.   We hope to host a Career Day on Tuesday, October 24 to introduce the students to a variety of professions that involve the use of math.  Each guest will be given 20-30 minutes to introduce his/her occupation, discuss its relationship with math, and have a short question & answer session.

If you (or someone you know) would be willing to share your job expertise, send me an email ([email protected]no later than Monday, October 9.  Please include your name, student connection, career, phone #, and preferred presentation time (morning 9:30-11:30 or afternoon 1:00-3:00).  We will get in touch with you once we determine a specific schedule.  Thank you for taking an interest in our students’ futures!

NO CAREER OR JOB IS TOO BIG OR TOO SMALL!

Week of Sept. 18-22

Thursday, Sept. 21- Fall pictures will be taken.  Ordering information will be sent home on Monday.

Friday, Sept. 22- Book orders due.  You may order online, send exact cash, or send a check made payable to Scholastic Book Club.

Also on Friday, the multiplication fact re-test will be given.  Students who score below a 90 will receive a homework packet of fact practice pages the next week.

 

Multiplication Facts

The majority of math-related stress in 4th grade students comes from the lack of knowledge of the basic multiplication facts.  It is EXTREMELY important that students become fluent in their facts so they can concentrate and spend time on the process of HOW to solve a problem, and not just spend all of their time trying to do the computation of the problem. 

Below are some practice links to Quizlet.  Clicking on a link below will allow many options to practice a set of facts:  Flashcards, Learn, Test, Scatter, & Space Race.

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Angle Practice Links

These online games will help you practice classifying and measuring angles.  Each picture will take you to a different game.

CLASSIFYING angles as right, acute, obtuse, or straight:

 

 

 

 

 

 

 

 

 

 

MEASURING angles: