Lesson Plan
Curated OER

Subtracting Whole Numbers

For Teachers 2nd
Second graders practice subtracting numbers by using a visual aide.  In this number sense instructional activity, 2nd graders complete whole number subtraction problems by utilizing manipulative cubes to visualize the...
Worksheet
Curated OER

Addition Practice

For Students 2nd - 3rd
In this addition practice worksheet, students solve a total of 16 addition problems, all problems add one 3 digit number to another 3 digit number.
Lesson Plan
Curated OER

Career Stories

For Teachers 2nd
Second graders write and solve word problems related to career stories.
Worksheet
Curated OER

First and Then

For Students 2nd - 5th
In this Christmas problem solving activity, learners solve 7 mathematical problems by first doing the work in parentheses and then solving each problem.
Lesson Plan
Curated OER

Addition and Subtraction

For Teachers 2nd - 3rd
Students develop their own strategies to solve basic addition and subtraction facts. In this addition and subtraction lesson plan, students use strategies they already know and new ones to solve problems.
Worksheet
Curated OER

Classify and Measure Angles #1

For Students 2nd - 3rd
In this angles worksheet, students classify and measure 2 simple angles. Worksheet is part of a site with additional activities and links.
Lesson Plan
Curated OER

Easier Way to Subtract

For Teachers 2nd - 3rd
In this subtraction review worksheet, students read about the Tic Tac Toe method for subtraction and then use the method to solve some problems.
Worksheet
Curated OER

Addition - Three 1-Digit Numbers

For Students 1st - 2nd Standards
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.
Worksheet
Curated OER

Addition - Three 2-Digit Numbers

For Students 2nd - 4th Standards
In this addition practice worksheet, students practice their computation skills as they solve 25 problems that require them to add 2-digit numbers. Each problem has 3 addends.
Lesson Plan
Curated OER

Chart Trivia

For Teachers 1st - 3rd
Students practice addition and subtraction problems and answer questions using greater than and less than. They chart information to create a graph on the computer.
Lesson Plan
Curated OER

Just a Little Bit

For Teachers 2nd
Second graders read the book, "Just a Little Bit" and work in groups weighing the same object with a scale. They then get a different unit of measurement, like paper clips, cotton balls, washers, or pennies and then figure out and record...
Worksheet
Curated OER

Double Digit Fun

For Students 2nd
In this addition worksheet, 2nd graders solve the two digit addition problems by adding the ones first and then the tens. Students write their answers into the puzzle. Students solve 30 addition problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Subtracting 2 Digit Numbers Without Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a two-digit subtraction problem without regrouping. The video is followed by additional problems for students to practice the skills...
Unit Plan
Khan Academy

Khan Academy: Add 2 and 3 Digit Numbers (No Regrouping)

For Students 1st - 3rd Standards
Practice solving problems like 243 + 452. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Addition Sums to 100 Word Problems

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two addition problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Subtraction Numbers to 100

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two, two-digit subtraction problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Addition Sums to 100 Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video explains two addition problems one with regrouping and the other without regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Overview of Subtraction Numbers to 100 Word Problems

For Students 1st - 2nd Standards
[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.
Unit Plan
Khan Academy

Khan Academy: Subtracting 1s or 10s (No Regrouping)

For Students 1st - 3rd Standards
Practice solving problems like 67-5 and 67-50. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Unit Plan
Khan Academy

Khan Academy: Add 10s and 100s (No Regrouping)

For Students 1st - 3rd
Practice solving problems like 344+20 and 344+200. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Subtract 2 and 3 Digit Numbers (No Regrouping)

For Students 1st - 3rd Standards
Practice solving problems like 452 + 241. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
Khan Academy

Khan Academy: Subtract 2 Digit Numbers (No Regrouping)

For Students 1st - 3rd
Practice solving problems like 45 - 24. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.