The Core Knowledge Foundation provides open access to content-rich curriculum materials for preschool through grade 8, including the Core Knowledge Curriculum Series™, with many materials now available and many more in development.
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The materials made available for download are freely available for anyone to use, adapt, and share (with attribution), but no one is permitted to sell either the original program, an adaptation of it, or lesson plans that reproduce any part of it. For more information, see the Guidelines to Core Knowledge and the Creative Commons License.
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- Grade 6 CKMath Unit 1: Area and Surface Area Grade 6 Mathematics
- CKMath Unit 2: Introducing Ratios Grade 6 Mathematics
- CKMath Unit 3: Unit Rates and Percentages Grade 6 Mathematics
- CKMath Unit 4: Dividing Fractions Grade 6 Mathematics
- Grade 8 CKMath Unit 1: Rigid Transformations and Congruence Grade 8 Mathematics
- CKMath Unit 2: Dilations, Similarity, and Introducing Slope Grade 8 Mathematics
- CKMath Unit 3: Linear Relationships Grade 8 Mathematics