K12 Reader
Shapes on a Plane
Geometric shapes are the focus of a comprehension exercise that asks readers to examine a short passage about planes, circles, triangles, and rectangles, and then to respond to a series of questions about the article.
Curated OER
Mixed Addition and Subtraction Word Problems Two Version 1
In this word problems worksheet, students read the word problems and use addition or subtraction to solve the problems. Students solve 5 word problems.
Curated OER
Roots and Radical Expressions
In this Algebra II worksheet, 11th graders simplify radical expressions. The two page worksheet contains explanation, worked example, and three practice problems. Answers are not included.
Curated OER
Using Ratios
Students study the Golden Ratio and its relationship to Renaissance artists. After exploring proportions and ratios used by Renaissance artists, students create a mix of ten variations of color paint, and record the ratios of primary...
Curated OER
Making Predictions
Students collect and classify items. For this making predictions lesson, students go outside and collect specimens of plants, insects and minerals. They classify each item and place them in a Venn Diagram. Students compare and contrast...
Curated OER
Prime and Composite Numbers
Sixth graders inspect prime and composite numbers. Using graph paper, they draw as many different shaped rectangles as possible. They use the dimensions of the rectangles to discuss prime and composite numbers. Students create a chart...
Curated OER
Coin Drop
Students calculate the theoretical and empirical probability by dropping coins on a grid. They record their data and compare the theoretical and empirical data. Students make predictions about the results before conducting the experiment.
Curated OER
A RealSim Surface Look at Descriptive Statistics
Students explore the concepts of mean and variance. They observe properties of materials to their basic atomic or molecular structure. Students use spreadsheet software to record, tabulate and analyze collected information.
Curated OER
The Clumsy Tiler S
Fourth graders solve a series of parallel problems. They use statistics, geometrical, and numerical aspects to solve the problem. Students create a pattern that answers the problem.
Curated OER
The Clumsy Tiler N (Fractions)
Students explore patterns and geometric sequencing. Students devise and use problem solving strategies to explore situations mathematically. Students solve real life problems. They demonstrate, with cardboard pieces, fraction and...
Curated OER
The Symmetry of Snowflakes
Celebrating the change of season with science and language arts activities.