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Worksheet
Curated OER

Addition-Adding on Tens, Sheet 1

For Students 2nd - 4th
In this adding on tens instructional activity, students add multiples of 10 to given numbers. A reference web site is given for additional activities.
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Worksheet
Curated OER

Addition - 2 digit addition sheet 1

For Students 2nd - 4th
In this addition learning exercise, students add two digit numbers with and without regrouping. Students complete 30 two digit addition problems.
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Worksheet
Curated OER

Addition: Two Digits

For Students 2nd - 3rd
In this addition with two digits activity, students solve thirty 2 digit addition problems printed horizontally, with the reminder to add in their heads, bigger number first.
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Worksheet
Curated OER

Subtracting 1, 10, 100 and 1000

For Students 2nd - 3rd
In this subtraction worksheet, students use the given number in the first row to practice their subtraction skills. Students complete the chart by subtracting 1, 10, 100, and 1000 from the first number.
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Worksheet
Curated OER

Subtracting Ones

For Students 2nd - 3rd
In this subtraction activity, learners complete a total of 30 problems, subtracting a different number of ones from 2-digit numbers.A reference web site is given for additional activities.
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Worksheet
Curated OER

Subtraction-2-Digit Numbers, Sheet 4

For Students 2nd - 3rd
In this subtraction worksheet, students use subtraction facts to find missing numbers in problems. A reference web site is given for additional activities.
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Lesson Plan
Curated OER

Estimate, Solve, and Check

For Teachers 1st - 2nd
Young scholars estimate, solve, and check a series of addition and subtraction number and word problems. They write their estimates on a recording sheet, compute and write the answer in the next column, and check their answer with a...
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Worksheet
Curated OER

Everyday Mathematics: Ballpark Estimates

For Students 2nd - 3rd
In this estimating practice worksheet, students sharpen their math skills as they learn how to make likely estimates and try the 2 extra practice activities.
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Worksheet
Curated OER

Hidden Hundreds

For Students 2nd - 3rd
This is a great puzzle like challenge for your advanced learners. They are given 5 problems to solve, they must show how many ways they can make to provided number using the given numbers in the box. For example: To make 800 they need to...
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Lesson Plan
Curated OER

Add It Up In Number Ville! Adding 2-Digit Numbers With and Without Regrouping

For Teachers 2nd - 4th
Students explore adding 2-digit numbers. In this math lesson, students identify 2-digit numbers and use base ten blocks to practice adding. Students use addition to break a code.
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Lesson Plan
Curated OER

Math Match Up!

For Teachers 2nd - 3rd
Help learners solve problems using multiplication and repeated addition. Using counters, learners will be paired up to solve problems. They will go through a series of questions and show models with the counters for the solution. Then...
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Lesson Plan
Curated OER

Dragon Math

For Teachers K - 2nd
Students engage in a lesson which provides a fun way to increase a student's ability to combine and separate numbers to form landmarks. They access a game online and play in pairs.
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Lesson Plan
Curated OER

Counting Money and Making Change

For Teachers 2nd - 3rd
Pupils count collections of coins and one-dollar bills. They solve problems and learn to use the dollar sign ($) with the decimal point to represent money amounts. This activity is important as a foundation for future math concepts in...
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Worksheet
Curated OER

Subtraction Worksheet: Numbers to 19

For Students 1st - 2nd Standards
For this subtraction worksheet, students solve 36 problems in which numbers below 20 are subtracted. The minuend has two digits and the subtrahend has only one.
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Lesson Plan
Curated OER

Dance, Dance, Dance

For Teachers K - 2nd
Use dance and song to help your charges in adding whole numbers to 10. In this adding to 10 lesson, learners become the manipulatives as you add them.
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Lesson Plan
Curated OER

Telling Time to 5 Minutes

For Teachers 2nd
For this second grade lesson your class will practice telling time. The goal is to tell time to five minutes using an analog clock. Your young students count by 5 minute intervals and discuss elapsed time. 
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Lesson Plan
Curated OER

Addition

For Teachers 1st - 3rd
Explore the concept of number bonds with your young elementary students. They will become familiar with the number bonds to 10, 20, and 100, and then play games to practice these skills. This is a differentiated lesson which includes an...
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Lesson Plan
Curated OER

How Many Under the Shell?

For Teachers Pre-K - 2nd
Children discover basic addition and subtraction facts. They play an online game in which they practice addition and subtraction facts. This could be a perfect computer lab activity for your students to engage in.
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Lesson Plan
Curated OER

Counting Back and Counting On

For Teachers Pre-K - 2nd
Read aloud your choice of books about counting on and counting back (a list is provided, or tell stories of your own). Your learners will write horizontal equations to portray what happens in the story. They build a paper chain and...
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PPT
Curated OER

Using Number lines in Addition and Subtraction

For Teachers 2nd - 3rd
Adding and subtracting can be done by counting on or counting down a number line. This presentation provides a complete demonstration and examples of how one can use a number line to solve double-digit addition and subtraction problems....
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PPT
Curated OER

Teddy Bear Subtraction

For Teachers 1st - 2nd
Do this exercise to prime early learners for a day of subtraction. They discuss problem-solving strategies, listen to a story problem involving teddy bears, then go to their assigned math station. This is a great way to prime the day.
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Worksheet
Curated OER

10 More or 10 Less

For Students 1st - 2nd Standards
Practice adding and subtracting 10 with this outer space worksheet. On the top, scholars match digits floating in stars with sums inside a spaceship. Next, they do the same with subtracting 10, connecting numbers to differences. These...
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Lesson Plan
Curated OER

The Human Memory

For Teachers Pre-K - 6th
This is a well-designed, creative lesson plan to help learners learn more about the human memory. Working in pairs, students complete tasks and gather data. Excellent websites for resources are also provided.
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Lesson Plan
Curated OER

Balancing Act

For Teachers 2nd
Second graders identify the attributes of various shapes and estimate the weight of the objects. In this geometry lesson, 2nd graders identify the attributes of concrete objects and use a pan balance to weight them.

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