Search Standards & Resources   |   GaDOE Website
 
With the exception to the GSO Videos, this website is no longer updated and may contain outdated information. Please visit the new GSO website at http://www.georgiastandards.org.

To view the Georgia Classroom Instructional Videos, the following plug-ins need to be installed on your computer; Flash and Java.

Internet Explorer 8 users need to go to the Tools menu and select "Compatibility View".
GPS WEBSITE FINDER
Professional Learning
GLC Lesson Plan Builder (Unit Design Builder)
Partners in Education
GSO to GO

CONTACT INFORMATION
For General Information:
GSO Content
1952 Twin Towers East
205 Jesse Hill Jr. Drive SE
Atlanta, GA 30334
 (404) 463-1280
 (404) 657-5183
  bcaracci@doe.k12.ga.us

Pam Smith (Standards)
Director of Academic Standards & Instructional Services
1766 Twin Towers East
205 Jesse Hill Jr. Drive SE
Atlanta, GA 30334
 (404) 463-1929
  pamsmith@doe.k12.ga.us

  Math Staff Contacts

  GSO Staff Contacts

Help Desk
(Technical Assistance)
 (800) 869-1011

Report Problems with this Page
Using Arrays to Multiply Bigger Numbers

Karen Neal & Michelle Blaylock
4th grade
Gilbert Elementary School
Walker County Schools

Contents

Task
Overview
In this task, students will demonstrate how to multiply two-digit numbers using arrays. Students will be given a multiplication problem with a two-digit number by a two-digit number. They will use graph paper to solve the problem by breaking it down into partial products (smaller arrays to find the answer).

Illustrative Task

Multiplication with Base Ten Blocks
Model each expression with a drawing of base 10 blocks. Show how you use the model to find the product.

2 * 13        11 * 4
5(15)        (13)(6)

Multiplying Bigger Numbers(Using Arrays)
There are 16 kids in our class. Each kid brings in 12 colored pencils for the empty class pencil drawer. How many pencils does our class have now?
  • Solve and show your work using what you already know about arrays.
  • Create your own multiplication story using two 2 digit numbers.
  • Solve and show your work!

GPS Addressed
M4N3. Students will solve problems involving multiplication of 2-3 digit numbers by 1-2 digit numbers.

Video Information
Use these questions to guide your thinking about some of the important teacher ideas in the lesson featured in the video clip.
  1. What kinds of questions does the teacher ask to promote students’ problem solving?
  2. How is the teacher gauging students’ current understandings and building from those understandings?
  3. Consider the GPS standards listed with this video.
  4. What makes this lesson different from lessons you have taught on this topic?

Classroom Materials

Privacy Policy   |   Terms of Use   |   Site Requirements   |   Feedback Copyright © 2005-2006 Georgia Department of Education
mathframework