Curated OER
Rational Number Project
Infuse your unit on fractions, decimals, and operations with a thorough module about rational numbers. With a teaching guide, learner examples, templates for instruction, and lesson rationale, the module is a solid way to...
EngageNY
Fraction Equivalence, Ordering, and Operations
Need a unit to teach fractions to fourth graders? Look no further than this well-developed and thorough set of lessons that takes teachers through all steps of planning, implementing, and assessing their lessons. Divided into eight...
Mathematics Vision Project
Module 3: Geometric Figures
It's just not enough to know that something is true. Part of a MVP Geometry unit teaches young mathematicians how to write flow proofs and two-column proofs for conjectures involving lines, angles, and triangles.
Mathematics Vision Project
Geometric Figures
Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...
PBS
Accessible Shapes
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...
Arizona Department of Education
Area and Perimeter of Regular and Irregular Polygons
Extend young mathematicians' understanding of area with a geometry lesson on trapezoids. Building on their prior knowledge of rectangles and triangles, students learn how to calculate the area of trapezoids and other...
Core Knowledge Foundation
Rocks & Minerals
Take young geologists on an exploration of the rock cycle with this six-lesson earth science unit on rocks and minerals. Through a series of discussions, demonstrations, and hands-on investigations your class will learn...
University of California
Euclidean Geometry
Go back to where it all began! Investigate how axiomatic systems and Euclidean geometry are based on undefined terms, common notions, postulates, and propositions by examining passages from Euclid's Elements. (Social studies teachers...
CK-12 Foundation
Ck 12: Elem Math: Determining Duration of Time One Step
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve word problems involving time written in 24-hour format. Includes video demonstrating a sample problem [0:38] and a set of...
SEDL
Sedl: Five Senses
Elementary students will gain great insight into the workings of our five senses through this collection of detailed, integrated lesson plans for grades K-3. Each lesson contains a list of needed materials, hands-on explorations...
Oswego City School District
Regents Exam Prep Center: Completing the Square
A lesson, practice exercise, and teacher resource to help you plan classroom instruction on completing the square. Lesson contains steps to completing the square and two step-by-step examples; practice exercise is a five-question quiz...
Khan Academy
Khan Academy: Linear Equations in Any Form
You've had practice with a few different forms of linear equations. In this exercise, you must study the line graph and write the equation for it in whichever format you choose. Students receive immediate feedback and have the...