Lesson Plan
Curated OER

Prime Numbers and Factors

For Teachers 5th - 7th
Solving factor trees is a helpful way to introduce prime numbers. Your math class practices using this method along with two-column tables to find if a number is prime or not. They also learn other vocabulary, such as composite numbers,...
Worksheet
Curated OER

Greatest Common Factor: Reteach

For Students 5th - 6th
In this greatest common factor worksheet, students review the different ways to find the greatest common factor for numbers including listing all the factors and finding prime factorization with factor trees. Students then list the...
Lesson Plan
Curated OER

Abiotic and Biotic Factors

For Teachers 3rd - 5th
Students examine abiotic and biotic factors. They define biotic and abiotic, categorize a list of items onto a Venn diagram, label various items from areas on the school grounds as biotic or abiotic, and diagram a magazine picture.
Lesson Plan
Curated OER

Factor Trees

For Teachers 3rd - 5th
Students practice factor trees. They use Paint in Microsoft Word to create factor trees. After completion, they use a calculator to check their answers. In addition, they visit websites to reinforce the information.
Worksheet
Curated OER

Prime Factorization with Factor Trees (1 of 2)

For Students 4th - 6th Standards
Six numbers (12, 32, 50,48,36, and 75) are given to learners to craft factor trees with. The first one is completed as an example in this first of two similar online worksheets. Note that where factorization is an foundational step in...
Worksheet
Curated OER

Greatest Common Factor

For Students 4th - 5th
In this GCF worksheet, students fill in missing numbers in factor trees and write the prime factorization to find the greatest common factor. Worksheet includes links to answers and additional worksheets.
Worksheet
Curated OER

Greatest Common Factor #2

For Students 4th - 5th
In this GCF worksheet, students fill in missing number in factor trees, then determine whether numbers are prime or composite. Worksheet includes links to answers and additional worksheets.
Lesson Plan
Curated OER

Super Factors

For Teachers 5th - 8th
Students complete activity pages. In this factors instructional activity, students practice finding the factors of numbers. They discuss prime factors and prime factorization and learn how to complete a factor tree.
Worksheet
Curated OER

Prime Factorization Worksheet

For Students 4th - 6th
Here's a prime factorization practice worksheet in which learners sharpen their problem solving skills as they solve six story problems.
Worksheet
Curated OER

Factors Worksheet

For Students 3rd - 5th
In this listing factors worksheet, students examine 30 math problems that require them to list the factors of 1-digit and 2-digit numbers.
Worksheet
Curated OER

Positive Proper Factors Worksheet

For Students 3rd - 5th
In this factors learning exercise, students list the positive proper factors for 20 specific numbers. Students record their answers in the boxes provided.
Lesson Plan
Curated OER

Introducing the Concept Prime Factors

For Teachers 5th
Fifth graders identify the prime factorization for 48 using different sets of factors. They find the prime factorization for 60.
Worksheet
Math Mammoth

Factoring and Primes 2

For Students 4th - 5th
In this factoring learning exercise, learners read about prime factorization, factor using factor trees, build numbers from primes and complete a challenge puzzle.
Worksheet
Curated OER

How Ecosystems Change

For Students 4th - 8th
In this ecosystems worksheet, students will look at 4 diagrams and determine if either primary or secondary succession would occur after that particular event happened. Then students will determine the limiting factor for 4 different...
Lesson Plan
Curated OER

Prime Factorization

For Teachers 5th - 6th
In these prime factorization worksheets, students make a factor tree of the given numbers and then write the answers using exponential notation. Students then use multiplication to check their factoring work. Students evaluate the...
Assessment
Science Matters

Formative Assessment #1

For Teachers 3rd - 5th
Discover how much your young scientists know about biotic and abiotic factors with a two-question formative assessment that requires them to observe, list, and describe. 
Lesson Plan
Science Matters

Plot Study

For Teachers 3rd - 5th
Small groups investigate plots of land to discover how abiotic and biotic factors interact. After recording their findings, scholars share observations with peers and self-reflect on the learning process. 
Lesson Plan
Alliance Theater

The Jungle Book Post-Show STEAM Lesson

For Teachers 4th - 8th
An ecosystem is really just the flow of energy through many different living organisms. A study of Rudyard Kipling's The Jungle Book leads to an environmental science activity in which learners study how various factors can affect...
Lesson Plan
Curated OER

Mission: Finding the LCM using Prime Factorization

For Teachers 5th - 6th
In this prime factorization worksheet, students find the least common multiple of the given pair of numbers using factor trees. Students solve 10 problems.
Lesson Plan
UAF Geophysical Institute

System Interactions: The Lorax and the Truffula Tree

For Teachers 3rd - 5th
If the Lorax were to write a letter, what would he write? Introduce your class to systems and feedback loops through the whimsical stylings of Dr. Seuss. Learners take on the Lorax's point of view to write a letter, among other activities.
Lesson Plan
Curated OER

Connect the Spheres: Earth Systems Interactions

For Teachers 4th - 8th
Is everything really connected? Take your class on a walk outside, where they will make observations and write them down on a worksheet. Once they are back in the classroom, learners will work to determine if and how things like birds,...
Lesson Plan
Curated OER

How Old is that Cookie?

For Teachers K - 6th
Students investigate adaptation.  In this cookie age activity, students examine changes and variations in chocolate chips in cookies in preparation for determining the age of trees using lines.  Students discuss how the age of...
Lesson Plan
Curated OER

Studying a Piece of an Ecosystem

For Teachers 5th - 10th
Students carry out an outdoor land study in which they identify organisms living in the soil, and any other animals living within the site. Groups also examine abiotic factors. They respond to a series of questions concerning their data...
Worksheet
Random House

Recipe for an Ecosystem

For Students 1st - 6th Standards
Creating an ecosystem is as simple as baking a cake. Well, maybe not, but using a recipe analogy helps learners realize that ecosystems consist of different components that come together in unique ways. Offer this worksheet as an...

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