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Mars: Mathematics Assessment Project
The Mathematics Assessment Project aims to bring the Common Core State Standards (CCSSM) to life in a way that will help teachers and their students turn their aspirations for achieving them into classroom realities. The project's free...
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies Ii
This illustrated math lesson shows how important levels of accuracy in measurement are. The answer can be different since a scale only accurately weighs to the nearest tenth of a gram instead of to the nearest hundredth of a gram. Aligns...
Student Achievement Partners
Illustrative Mathematics: Addition and Subtraction Fluency Set of Tasks [Pdf]
Students explore the relationship between addition and subtraction and develop an understanding of decomposing numbers in different ways in this first-grade lesson plan.
CK-12 Foundation
Ck 12: Analysis: Quadratic Formula and Complex Sums
[Free Registration/Login may be required to access all resource tools.] This lesson covers solving quadratic equations when the answers are complex numbers. Students examine guided notes, review guided practice and attempt practice...
Illustrative Mathematics
Illustrative Mathematics: 1.g All vs. Only Some
In this lesson, students come up with statements that is true about all of the triangles that they see but not true of all triangles in general, then the teacher should ask students if they can imagine a triangle without that attribute.:...
Illustrative Mathematics
Illustrative Mathematics: 1.oa Using Lengths to Represent Equality
For this lesson plan, 1st graders determine if lengths are equal to one another.
Illustrative Mathematics
Illustrative Mathematics: G Co Inscribing a Square in a Circle
For this lesson, students learn how to inscribe a square in a circle. Aligns with G-CO.D.13
CK-12 Foundation
Ck 12: Geometry: Inscribed Quadrilaterals in Circles
[Free Registration/Login may be required to access all resource tools.] Learn about the Inscribed Quadrilateral Theorem and solve problems involving quadrilaterals inscribed in circles.