Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences lesson, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Place Value Popsicles
Students play a place value game using popsicle sticks and dice. They investigate units and tens.
Curated OER
Unit 2 Sun & Stars
Young scholars describe stellar objects using terms such as stars, planets, satellites, orbits and light. In this sun and stars unit, students research stellar objects through seven individual lessons discovering star characteristics,...
Curated OER
Solving Money Problems
For this money worksheet, students solve problems where they add amounts of money in addition problems and finding the total cost of items. Students complete 8 problems.
Curated OER
Addition - Three 1-Digit Numbers
In this addition practice worksheet, students practice their computation skills as they solve 30 problems that require them to add 1-digit numbers. Each problem has 3 addends.
Curated OER
Addition - Three 2-Digit Numbers
In this addition practice instructional activity, students practice their computation skills as they solve 25 problems that require them to add 2-digit numbers. Each problem has 3 addends.
Curated OER
Shopping for Toys
Young scholars pretend as if they have just won a $100 gift certificate to buy some toys and must try to spend as much of it as they can without going over.
Curated OER
Lesson Plans That Meet The Needs of All Students
Differentiated lesson plans are an excellent tool for meeting students' needs in the mixed ability classroom.
Curated OER
Immigration Unit
Third graders develop an appreciate for the various cultures that are present in their local community. Through reading and research, they explain how various culture came to live in their area. At the conclusion of the unit, 3rd...
CK-12 Foundation
Ck 12: Elem Math: Subtraction 3 Digits Minus 2 Digits
[Free Registration/Login may be required to access all resource tools.] The video describes how to use regrouping when subtraction a two-digit number from a three-digit number. The video is followed by additional problems for students to...
CK-12 Foundation
Ck 12: Elem Math: Subtraction 3 Digits Minus 3 Digits
[Free Registration/Login may be required to access all resource tools.] The video shows how to subtract 3-digit numbers without regrouping. The video is followed by additional problems for students to practice the skills discussed in the...
CK-12 Foundation
Ck 12: Elem Math: Subtraction Select the Incorrect Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to use regrouping to solve a series of multi-digit subtraction problems to determine which one does not result in the given difference. The video...
CK-12 Foundation
Ck 12: Elem Math: Subtraction Select the Correct Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to use regrouping to solve a series of multi-digit subtraction problems to determine which one results in the given difference. The video is...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Cool Math
Coolmath: Coolmath4kids: Subtraction
A set of seven short tutorials on subtraction. Begins with a basic introduction to how subtraction works and covers topics such as fact families, place value, and regrouping.
Scholastic
Scholastic: Max's Math Adventures: Subtraction Square Dance
This site has a square dance rhyme with some fun subtraction practice. Teachers will appreciate the activity page, the extra challenges, and the teacher's guide for easy lesson planning.
Khan Academy
Khan Academy: Subtraction Within 1000
In this exercise, students practice subtraction within 1000. Students receive immediate feedback and have the opportunity to get hints, watch video tutorials, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Khan Academy
Khan Academy: Subtracting Two Digit Numbers (No Regrouping)
In this exercise, students practice subtracting two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to watch a tutorial video, get hints, and try questions repeatedly.
Cool Math
Coolmath: Coolmath4kids: Subtracting Numbers Within 100 With Regrouping
A step-by-step tutorial showing how to subtract using two-digit numbers in the tens and ones columns with regrouping. Includes sample problems to try. It also provides links to subtraction games and more.
Scholastic
Scholastic: Study Jams! Math: Addition and Subtraction: Additon With Regrouping
Solve problems step by step by addition with regrouping.
Scholastic
Scholastic: Study Jams! Math: Addition and Subtraction: Without Regrouping
Solve word problems with addition and subtraction without regrouping. Then test your knowledge.
Khan Academy
Khan Academy: Regrouping: Two Digit Number Minus One Digit Number
In this exercise, students practice regrouping with two-digit number minus one-digit number. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
CK-12 Foundation
Ck 12: Elem Math: Subtracting 2 Digit Numbers With Regrouping
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a two-digit subtraction problem with regrouping. The video is followed by additional problems for students to practice the skills...
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction Numbers to 100 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video explains two subtraction problems one with regrouping and the other without regrouping.