This eModule uses geoboards and pattern blocks to help students develop an understanding of the area formulas for parallelograms and triangles. Students are given the opportunity to develop skills by calculating the area of parallelograms, triangles, and irregular polygons.
CK-12's Geometry - Second Edition is a clear presentation of the essentials of geometry for the high school student. Topics include: Proofs, Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations.
This geometry lesson gives a few more 45-45-90 triangle examples and introduces the properties of 30-60-90 triangles. [Geometry playlist: Lesson 17 of 31]
This geometry lesson gives properties of 45-45-90 triangles and shows how to determine the lengths of their unshared sides. [Geometry playlist: Lesson 16 of 31]
This geometry lesson discusses how to determine the area of rectangles and triangles, as well as how to find the perimeter of a rectangle. [Geometry playlist: Lesson 11 of 31]
This book is a "flexed" version of CK-12's Basic Geometry that aligns with College Access Geometry and contains embedded literacy supports. It covers the essentials of geometry for the high school student.
A structured geometry program teacher edition of daily lesson plans and teacher supports to accompany the College Access Reader: Geometry student edition.
This geometry lesson shows how to use Heron's Formula to determine the area of a triangle while only knowing the lengths of the sides. [Geometry playlist: Lesson 21 of 31]
This geometry lesson is Part 2 of the Proof of Heron's Formula, showing that the expression derived in Part 1 is identical to Heron's Formula. [Geometry playlist: 23 of 31]
This geometry lesson continues the discussion of similar triangles and the use of ratios to determine lengths of corresponding sides. [Geometry playlist: Lesson 8 of 31]
CK-12 Foundation's Geometry FlexBook is a clear presentation of the essentials of geometry for the high school student. Topics include: Proof, Congruent Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations.
CK-12's Texas Instruments Geometry Student Edition Flexbook is a useful collection of exercises intended to enrich a student's understanding of basic geometric principles.
CK-12's Texas Instruments Geometry TeacherŐs Edition Flexbook is a useful collection of exercises intended to enrich a student's understanding of basic geometric principles.
CK-12 Geometry Teacher's Edition covers tips, common errors, enrichment, differentiated instruction and problem solving for teaching CK-12 Geometry Student Edition. The solution and assessment guides are available upon request.
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