4th Grade Math Units

Unit 1: Geometry

//http://www.brainpop.com/math/geometryandmeasurement/geometry/// This website offers free viewing of some of its cute videos. They're great for learning new concepts. Even better: consider getting a family subscription for the year so that you can view ALL of its videos in every subject area.

This site gives great definitions and examples of polygons. Sponsored by the Math League.

When you go to the "Polygon Playground," drag any of the rainbow shapes from the top to the center of your screen. Create fun shapes or patterns with the polygons. This is a site made simply for fun!

Unit 2: Numeration
Place Value; Addition and Subtraction of Multi-digit Numbers; Landmarks: Maximum, Minimum, Range, Median, Mode, Mean (Average)

This site reviews the landmarks and has some sample problems to analyze.

Read and follow the task in the lower right hand corner. This shows a good model of what is happening with subtraction.

Quiz yourself on your knowledge of the place value chart.

Unit 3: Multiplication and Division
Multiplication; Division; Number Sentences; Algebra

Games that help build these skills:
Baseball Multiplication SRB pp. 231-232
Beat the Calculator SRB p. 233
Division Arrays SRB p. 240
Multiplication Top-It SRB p. 264
Name That Number SRB p. 254
Multi-Fax Borrow a box from Mrs. Pardington

This site allows you to make practice sheets.

Practice your math facts. When you're ready to play, click the correct answer from the list on the left.

Practice your math facts here, too.

Try Math Baseball and Math Arcade. Get your parents' permission before giving out any informtaion, including your family's email address.

This site by Brain Pop shows what division means. Currently it's free to play this movie, but later they may charge a subscription. I recommend purchasing a subscription if you're thinking of subscribing to a good website for the family's educational needs.

Unit 4: Decimals and Their Uses

This is a good review or introduction to the concepts of decimals.

I like the look of this site. I think it does a good job of showing you the place value chart and relating it to decimals.

Think you've got the connection between decimals and fractions? Try this worksheet and have a parent check it. Bring it in for extra credit.

Unit 5: Big Numbers, Estimation, and Computation


This site includes an explanation of how to play Multiplication Wrestling.

Partial Products

This PowerPoint presentation shows the partial products method nicely. I found this on the internet. If anyone can find the author, please let me know so that I can give them credit for it.

A 4th grade teacher by the name of Mrs. Johnson provides summaries of each unit from Everyday Math and very useful links at this website. This section for Unit 5 covers Partial Products which is a natural follow-up to Multiplication Wrestling and then a natural lead in to the traditional multiplication method.

Nice site for "rounding" practice.

This site explains lattice multiplication. One image didn't show up for me. This image was trying to show that when you have a single digit as a product (say, 2 x 4 =8), you would write the product with a "0" in the tens place. So "8" would be written as "08" so that each part of the box would be filled.

This site allows you to print out worksheets for the lattice method.

Unit 6: Division; Map Reference Frames; Measure of Angles

Type in the angle you want to see, and it will then display that angle. The type of angle that you have made is listed at the bottom.

This site uses a slide show to explain Partial Quotients (Division)

Click HERE to see another slide show explaining Partial Quotients. This one was created by Rina Iati of the South Western School District in Hanover, PA.

This site may be useful in practicing multiplication and division word problems (story problems).

Unit 7: Fractions and Their Uses; Chance and Probability

GREAT site to start. This site covers MANY of the topics we cover in this unit.

This website uses pattern blocks to help students understand fractions.

Nice introduction to probability.

Check this site out to revisit adding fractions.

Remember to multiply your fraction by a form of "1", like 2/2 or 3/3 or 4/4 or 10/10 or 11/11 or 20/20 or 100/100 (you get the idea), to get an equivalent fraction.

Once you think you've got equivalent fractions down pat, try this game. Can you beat Mrs. Pardington or a family member at home?

Quick model that shows fraction, decimal, and percentage equivalencies.

If you're up to the challenge, you can try this game of adding and subtracting fractions. You will need knowledge of how to convert improper fractions to mixed fractions.

Test your knowledge of fractions.

Great collection of links to fraction related sites.

Use this site to help you compare fractions.

Unit 8: Perimeter and Area

Good site to start with to review or learn about perimeter and area.

Play to find the perimeter and area of rectangles. Notice how different rectangles can have the same perimeter or area but look very different.

Now that you know the difference between "area" and "perimeter," try this game. Pay attention to the directions.

Make different shaped ships to help Dr. Marbles. There are lots of different possibilities.

Good place to start to find out how to find the area of a triangle. It shows how the area of a triangle is half the area of its related rectangle.

Find the area of the triangle. Remember, to find the area of a triangle multiply the length times the height and then divide by 2.

Unit 9: Fractions, Decimals, and Percents

Use this site to practice. You may use a calculator to help you.

Unit 10: Reflections and Symmetry

Example of TRANSLATION (slide)

Example of REFLECTION (mirror image)

Example of ROTATION (turn)

Click HERE to see Mrs. Pardington's PowerPoint examples of translation, reflection, and rotation.

Unit 11: 3-D Shapes, Weight, Volume, and Capacity

Review how to find the volume of a rectangular prism.

A little review of negative numbers with a number line model

Nice introduction or review of negative numbers.

Number Line
This slide show reviews the number line with negative numbers and tries some addition problems. This slide show comes from www.icteachers.co.uk/resources/numeracy/**negativenumbers**.ppt.

If you think you are ready to add and subtract negative numbers, try this game.

Unit 12: Rates