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Curated OER
Maya Math: Addition and Subtraction
Students examine how ancient Maya counted, and practice addition and subtraction using Maya number glyphs.
Curated OER
Math Computation
Second graders complete math computation word problems. In this word problems lesson, 2nd graders read the math computation word problems and solve them.
Curated OER
Linear Systems: Review of Vectors
In this review of vectors instructional activity, students explore vectors and their uses. They multiply and subtract vectors and identify the linear combinations of given matrices. This two-page instructional activity contains...
Curated OER
Fraction Facts
Young scholars explore the concept of fractions. In this fractions lesson, students perform basic operations such as addition and subtraction with fractions. Young scholars play a game on the computer called 'Fraction Four' that gives...
Curated OER
Making Connections, Linking Population and the Environment
Learners find out that all habitats have a carrying capacity. They explore how the world's human population has grown markedly in the 20th century, and that humans impact environmental health. Students investigate that people can and...
Curated OER
"Quack Said the Billy-goat"
Second graders read the poem together, "Quack Said the Billy-goat" and discuss what makes the poem funny and which words rhyme. They observe the teacher writing a new first verse, changing some of the text, but leaving the original rhyme...
Curated OER
Subject Verb Agreement
Seventh graders engage in a lesson that investigates the concept of identifying prepositions and their coinciding phrases. They also develop the skill of connecting the right form of a verb with its subject. Then students take a quiz...
Curated OER
Investigating Volume
Ninth graders investigate and make conjectures about volume. In this geometry lesson, 9th graders analyze data and predict the outcome. They calculate volume using different tiers.
Illustrative Mathematics
Illustrative Mathematics: Words to Expressions 1
This problem allows students to see words that can describe the expression from part (c) of "5.OA Watch out for Parentheses." Additionally, the words (add, sum) and (product, multiply) are all strategically used so that the student can...