Unit 1 - Multiplication by Repeated Addition
Adding the same number multiple times in order to find the answer to a multiplication problem, for example, finding the answer to 3 x 4 by saying 4 + 4 + 4 = 12

Units 1 & 2 - Multiply by Specific Digits
Practice your beginning multiplication skills with these interactive websites that allow you to choose to multiply by a specific digit (i.e. 0, 2, 5, 10, etc.).

Units 1 & 2 - Divide by Specific Digits
Practice your beginning division skills with these interactive websites that allow you to choose to divide by a specific digit(s) such as 2, 5, 10, etc. Some of these games allow you to self-select several digits to practice during a single game.

Unit 1 - Multiplication Using Pictographs
Pictographs are graphs where a picture (i.e. star, circle, smiley face) represents data. The pictures on a pictograph may represent different values so be sure to look at each graph's key.

Units 1 & 2 - Multiplication & Division Word Problems
Exercise your brain with word problems focusing on your multiplication and division skills. Two websites include practice on determining which operation(s) to use (addition, subtraction, multiplication or division). Also includes multiple step word problems.

Unit 2 - Multiplication Arrays
Multiplication arrays are visual representations of a multiplication problem using pictures in rows and columns.

Unit 2 - Multiplication Squares
Multiplication squares are also known as multiplication grids or a times table grid.

Units 1 & 2 - Multiplication (Mixed Practice)
These websites will help students built multiplication fluency through mixed digit practice.

Units 1 & 2 - Division (Mixed Practice)
These websites will help students built divbision fluency through mixed digit practice.

Unit 3 - Customary Units of Length (Inches & Feet)
Review measuring inches or challenge yourself with timed measurement games focusing on inches and feet.

Unit 3 - Customary Units of Liquid Volume
Explore customary or standard units of liquid measurement including cups, pints, quarts and gallons.

Unit 3 - Metric Units of Liquid Volume
Explore milliliters and liters with these interactive websites. Please note that liquid volume is also known as liquid capacity in the metric system of measurement.

Unit 3 - Customary Units of Weight & Metric Units of Mass
These websites explore ounces, pounds, grams and kilograms. Weight is the customary term for this type of measurement while mass is the synonymous metric term.

Unit 3 - Telling Time
More than 20 interactive websites to help you practice telling time at various intervals (1, 5, 15, 30 or 60 minutes); telling time with words (quarter to, half past, etc.) and determining elapsed time.

Unit 3 - Understanding & Organizing Data
A variety of interactive websites to practice reading and interpreting data from pictographs, bar graphs, frequency tables (tallies), and line plots. Also includes some websites for making your own pictographs and bar graphs

Unit 4 - Place Value
Exercise your brain with these fun interactive websites dealing with place value from ones, tens, hundreds and thousands. Also includes a few websites to practice expanded and standard forms of place value.

Unit 4 - Rounding to Nearest 10 or 100
Apply your rounding skills with these interactive websites.

Unit 4 - Multidigit Addition
Includes interactive websites to practice 2 digit by 2 digit addition and 3 digit addition. ALSO INCLUDES SEVERAL ONLINE VIDEOS demonstrating new methods for adding multidigit numbers including "Show All Totals," "New Groups Below," "New Groups Above" and other items such as "Proof Drawings."

Unit 4 - Multidigit Subtraction
A list of interactive websites to practice 2 digit by 2 digit subtraction and 3 digit subtraction. ALSO INCLUDES SEVERAL ONLINE VIDEOS demonstrating methods for subtracting multidigit numbers. The term "partitioning" refers to "Count on by Tens to Subtract, Make a Hundred to Subtract and Make a Thousand to Subtract" in the Math Expressions Common Core textbook.

Unit 4 - Addition & Subtraction Word Problems
From this list of websites you can choose to practice addition only word problems, subtraction only word problems or mixed practice (addition and subtraction) word problems. One website focuses on helping students to determine which operation (addition or subtraction) to use when solving word problems.

Unit 5 - Word Problems
Eighteen websites to exercise your skills at solving word problems. Includes addition, subtraction, multiplication, division, mixed practice and multi-step word problems. Also includes websites to help students determine which operation(s) to use when solving word problems.

Unit 6 - Polygons
Recognize and identify a variety of polygons including triangles, quadrilaterals, parallelograms, rectangles, squares, rhombuses, and trapezoids with these interactive websites.

Unit 6 - Perimeter & Area (Includes Tangrams)
Learn about area and perimeter with these interactive websites and challenge yourself with the tangram websites.

Unit 7 - Fractions
Explore fractions with these interactive websites. This list includes websites for understanding fractions, ordering fractions on a number line, comparing fractions (greater than & less than), and equivalent (equal) fractions.