Curated OER
Factor Trees
For this factor trees worksheet, students make factor trees for 2 through 4 digit numbers. Students complete 20 factor trees for these numbers.
EngageNY
Least Common Multiple and Greatest Common Factor
Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...
Illustrative Mathematics
How Many Leaves on a Tree?
This is great go-to activity for those spring or fall days when the weather beckons your geometry class outside. Learners start with a small tree, devising strategies to accurately estimate the leaf count. They must then tackle the...
Curated OER
Prime Factorization: Finding Factors in the Fifth Grade
The lesson starts out with a brain drain, which is a great way to get students to activate prior knowledge and build lasting connections. They tell everything they know about prime factorization, use their knowledge to...
Curated OER
Learning About Trees
After looking at pictures of trees, discussing tree growth, and identifying the parts of a tree, lead your class on a nature walk and have them collect samples and record their observations. They then work in pairs to polish the...
US Environmental Protection Agency
Tree Rings: Living Records of Climate
Open with a discussion on weather and climate and then explain how tree rings can provide scientists with information about the earth's past climate. Pupils analyze graphics of simulated tree rings from various US locations for the...
Curated OER
Greatest Common Factor: Using the Factor Tree
Students find the greatest common factor of two numbers. For this algebra lesson, students use prime factorization to find their factor to simplify equations. they create a factor tree to find the factors of composite numbers.
Chicago Botanic Garden
What Can Tree Rings Tell Us About Climate?
Tree rings are slightly thicker on the south side of the tree because it receives more sunlight. Part two in a series of five lessons helps learners analyze tree rings to determine the environmental conditions that caused size...
Willow Tree
Factoring Polynomials
Young mathematicians discover trees organize more than just families — they help factor, too. The lesson begins with factor trees and develops slowly to factoring by grouping and special patterns.
Alabama Learning Exchange
How Old Is That Tree?
Fifth graders study environmental changes by examining the annual rings of a cross-section of a tree trunk. They access websites to complete a worksheet on the parts of a tree. They count the annual rings on a tree slice while observing...
Curated OER
Missing Factors
Students explore factors. They discuss factors, factor trees and prime factors. Students practice working with and finding various factors and prime factors. They discuss methods used to find factors.
Curated OER
Prime Numbers and Factors
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,...
National Wildlife Federation
Branching Out – Exploring Dendrochronology
Tree rings from North America give a continuous history of El Nino intensity over the last 1,100 years. Scholars learn how scientists use tree rings to create timelines demonstrating variations in weather patterns. The cumulative...
Curated OER
Lord of the Rings - A Study of Tree Rings
Students examine trees and discuss how the environment effected the tree. They also predict what the area look like in fifty years.
Curated OER
Abiotic and Biotic Factors
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.
Curated OER
Factor Trees
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.
Curated OER
Super Factors
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.
Curated OER
Structural Factors in Evolution
Laboratory activities encourage evolutionary biology scholars to consider homologous structures as evidence of common ancestry. They learn how to formulate phylogenic trees and that environment influences to genetic variation. Activities...
Curated OER
Introducing the Concept Prime Factors
Fifth graders identify the prime factorization for 48 using different sets of factors. They find the prime factorization for 60.
Curated OER
Limiting Factors/Evolution Game
Students play a board game with provided cards which help them realize that limiting factors may restrict an organism in its development and productivity and direct evolutionary pathways.
Curated OER
Ecosystems: Biotic and Abiotic Factors
Seventh graders examine proper journaling techniques, and record observations about at tree after listening to a read aloud of "Four Worlds: The Dine Story of Creation." They study the difference between living and non-living things, and...
Curated OER
Factorizations
In this math worksheet, students find the answers for finding the factors for each whole number. They could use factor trees to find the solutions.
Curated OER
Prime & Composite Numbers: Algebra/Geometry Institute 2009
Learners create factor trees. In this prime and composite lesson, students model fractions using tiles. They create factor trees and identify prime and composite numbers. Learners use grid paper and tiles to model...
Curated OER
Modeling Prime Factorization
Students model factors using tiles and grid paper. They differentiate between prime and composite factor trees. Students illustrate prime factorization using factor trees. They are given 12 tiles or cut-out paper squares. Students...
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