*By Janet Pinto, Chief Academic Officer, Curriki
*

If you know a math teacher or a student who’s interested in math, please tell them about Curriki. Did you know we offer more than 15,000 free online math open educational resources (OERs)? Here are our most popular math resources over the past year.

**Teaching Fractions**– this collection includes lessons and videos, including “Fraction Operations” and “Fun with Fractions.”**Math for Americas: Lessons, Activities and Problems**– designed for middle and high school students, this includes collections of lessons, activities, and problems organized by subject (pre-algebra, trigonometry, calculus, statistics, geometry and more).**Curriki Geometry PBL Modules**– Curriki Geometry comprises six Common Core State Standards (CCSS)- aligned projects. The projects are available in both PDF format for easy download and in an online course format at www.currikigeometry.org.**Division (video) from Khan Academy**– This video is an introduction to division: what it means and how to do it. You can find links to many other Khan Academy video resources here.**For Students: Project-based Pre-Algebra**– This unit is meant to provide supplemental support to a standard Pre-Algebra course and is meant to connect the world of math to that of art. These projects follow the typical sequence of a standard 7th/8th grade Pre-Algebra course.**Relationships between Quantities and Reasoning with Equations**– By the end of eighth grade, students have learned to solve linear equations in one variable and have applied graphical and algebraic methods to analyze and solve systems of linear equations in two variables. This unit builds on these earlier experiences by asking students to analyze and explain the process of solving an equation.**Mathematics**– This collection is a full course of material in the form of a textbook provided by FHSST (Free High School Science Texts). FHSST is a project that aims to provide free science and mathematics textbooks for Grades 10 to 12 science learners.**Area of a Triangle**– This lesson walks students through a classic optimization problem involving building the maximum area of a triangle, expressed in terms of an angle. The lesson uses a worksheet in The Geometers Sketchpad.**Curriki Algebra**– These modules are based upon the domains and Common Core State Standards clusters. They contain daily lessons based on the four algebra domains and the standards and standard clusters found within. The daily lessons are based on 50-minute sessions and build up to a culminating project-based activity.**Math eTextbooks**– A collection of free math eTextbooks including algebra, statistics and probability, calculus, geometry and more.

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