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Lesson Plan
Curated OER

Number in Geometry

For Teachers 2nd - 3rd
Students use a number line to assist with their additions. They use a calculator to check for factors. Students are taught factors and multiples. They use array model of multiplication to define meaning. Students develop a wide range of...
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Worksheet
Curated OER

Think of a Number

For Students 4th - 6th
For this math worksheet, students engage in a mental math activity. Student think a number and follow several computations with that number and always come up with the answer 9. Students discuss why this happens.
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Lesson Plan
Curated OER

Planet Picking

For Teachers 6th - 8th
Students arrange the planets according to their distances from the sun. In this astronomy lesson, students list interesting properties about each planet. They identify an unknown planet photo.
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Unit Plan
Khan Academy

Khan Academy: Add Decimals 2

For Students 4th - 6th Standards
Add whole numbers and tenths like 4 + 5.7. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Add Decimals 1

For Students 4th - 6th Standards
Add tenths like 0.7 + 0.5. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Add Decimals 3

For Students 4th - 6th Standards
Add larger numbers with tenths like 40.1+7.6 Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unknown Type
Khan Academy

Khan Academy: Add Decimals 5

For Students 4th - 6th Standards
Add whole numbers, tenths, and hundredths like 60+2.57 or 5.53+3.1 Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unknown Type
Khan Academy

Khan Academy: Add Decimals 4

For Students 4th - 6th Standards
Add hundredths like 0.76+0.21 Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unknown Type
Khan Academy

Khan Academy: Add Decimals 6

For Students 4th - 6th Standards
Add more challenging whole numbers, tenths, and hundredths like 5.7+4.51 or 47.75+11.98. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Add Whole Numbers, Add Decimals

For Students 3rd - 8th Standards
This website explains and defines adding whole numbers and decimals. Content explores addition with regrouping and how to align numbers in a written calculation. There are even practice problems at the end of the lesson.
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Interactive
Study Pad

Splash Learn: Add Decimals Using Models

For Students 5th
[Free Registration/Login Required] This fun decimal addition worksheet introduces students to the world of operations with decimal numbers. Fifth graders use models to visualize the addition of numbers in the tenths and hundredths places...
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Interactive
Doina Popovici

Math Play: Decimals Jeopardy Game

For Students 5th
This Jeopardy game challenges students to add, subtract, and multiply decimals. Play with up to 10 teams.
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Unknown Type
Khan Academy

Khan Academy: Adding Decimals: Tenths

For Students 4th - 6th Standards
Add two numbers that are either whole numbers or written to the tenths place value. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Adding Decimals: Hundredths

For Students 4th - 6th Standards
Add two numbers that are written to the ones, tenths, or hundredths place. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Activity
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: Subtracting Whole Numbers and Decimals

For Students 3rd - 8th Standards
If you are looking for a website that explains and defines subtraction with decimals you have arrived at an excellent resource. There are even practice problems at the very end of the lesson.
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Unit Plan
Goodwill

Gcf Global: Adding and Subtracting Decimals

For Students 5th - 8th Standards
In this tutorial, students learn how to add and subtract decimals.
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Handout
Fact Monster

Fact Monster: Decimals Places

For Students 3rd - 5th Standards
Fact Monster: Decimals is a learning module that focuses on digit placement. It also provides videos on how to add and subtract decimals and how to multiply and divide decimals.
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Unit Plan
Mangahigh

Mangahigh: Number: Add and Subtract Decimals

For Students 4th - 8th Standards
This site provides students practice with the concept of adding and subtracting decimals. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
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Unit Plan
Lesson Tutor

Lesson Tutor: Addition and Subtraction of Decimals

For Students 4th - 6th Standards
This site is an online lesson plan and practice problems for students learning how to add and subtract two decimal values are provided here. Detailed explanation of both the methods and the practice questions are provided for easy...
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Interactive
Arcademics

Arcademics: Hungry Puppies Making a Number Using Decimal Division

For Students K - 1st Standards
Feed the puppies by adding decimals correctly.
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Unknown Type
Khan Academy

Khan Academy: Adding Decimals: Tenths

For Students 5th Standards
Add two numbers that are either whole numbers or written to the tenths place value.
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Unit Plan
PBS

Pbs: Logical Leaps: Adding Fractions, Mixed Numbers, and Decimals on the Number Line

For Students 3rd - 5th
In this interactive, use logic to solve riddles involving a jumping frog contest. Add two consecutive jumps by one frog and place the jumps on the number line, finding equivalent fractions with common denominators to do so. Numbers are...
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Unknown Type
Khan Academy

Khan Academy: Adding Decimals Hundredths

For Students 3rd - 5th Standards
In this exercise, students practice adding decimals. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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Activity
Cool Math

Coolmath: Decimals How to Add Decimals

For Students 3rd - 7th Standards
Learn how to add decimals by lining up the decimals.

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