An interactive applet and associated web page that provide step-by-step instructions on how to find the center of a circle using only a compass and straightedge. The method used involves constructing the perpendicular bisectors of two random chords. The bisectors intersect at the center of the circle. The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

An interactive applet and associated web page that provide step-by-step instructions on how to find the foci of a given ellipse using a compass. The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

This task "Uses facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure (7.G.5)" except that it requires students to know, in addition, something about parallel lines, which students will not see until 8th grade.

Challenge first graders with math problems that will help them master first-grade math skills! In first grade, students learn about money, time, measurements, and patterns. Building a solid number sense is important for students in this age range. First graders learn to recognize patterns and sort objects by color, shape, and function. They will also learn to recognize and differentiate between two-dimensional and three-dimensional geometric shapes like squares, triangles, cones, and cylinders. By the end of first grade, students should be able to count to one hundred by ones, twos, fives, and tens. They will also be introduced to the concepts of more and less, and have an opportunity to work with simple graphs.

Now that your child has mastered numbers and counting, it's time to take things to the next level with our first-grade math worksheets! Keep students' math minds sharp with daily first-grade math and critical thinking practice worksheets as well as daily homework and practice pages. Weekly word problems, first-grade algebra and geometry, counting and comparing numbers, and introduction to addition are just some of the engaging, no-prep first-grade math worksheets available on this page.

The purpose of this task is for students to translate between measurements given in a scale drawing and the corresponding measurements of the object represented by the scale drawing.

The purpose of this task is to give students practice working the formulas for the volume of cylinders, cones and spheres, in an engaging context that provides and opportunity to attach meaning to the answers.

An interactive applet and associated web page that show the definition and properties of the focus points (foci) of an ellipse. The applet has an ellipse whose major and minor axes can be dragged. The applet shows the location of the foci, which are always on the major axis, and shows how they move with variation of the axis lengths. The web page also has a formula for calculating the location of the foci. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Math Game Time offers a variety of games, videos, and printable worksheets tailored for K-6 and middle schoolers to enhance their math skills. With focused videos on specific topics and kid-appropriate games, it's an ideal resource for practicing math skills.

Over 270 free printable math posters or maths charts suitable for interactive whiteboards, classroom displays, math walls, display boards, student handouts, homework help, concept introduction and consolidation and other math reference needs.

"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."

You will need to provide your email address to download these amazing resources. CK has aligned their ELA to the Science of Reading in collaboration with Amplify Reading.
*Full Units
*Books for Students
*Teaching Materials
*Scope & Sequence

An interactive applet and associated web page that demonstrate full angles (those equal to 360 deg). The applet presents an angle (initially full) that the user can adjust by dragging the end points of the line segments forming the angle. As it changes it shows the angle measure and a message that indicate which type of angle it is. There a software 'detents' that make it easy capture exact angles such as 90 degrees and 180 degrees The message and angle measures can be turned off to facilitate classroom discussion. The text on the page has links to other pages defining each angle type in depth. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Fun Kids Online Math Games (Sheppard Software is a great resource for teachers looking for new ways to differentiate. The games offered on this site have many levels, so no matter what stage your student is at, he or she can still practice and have fun! The games are geared towards elementary and middle school students.

The content and games for this website were created with these goals in mind:
1) To add sound and visual effects to make learning fun and more memorable.
2) To design games with many difficulty levels so that players will continue to be challenged no matter how far they progress.
3) To provide games that will exercise players' brains.

NOTE: although some of the money activities are using USD, many of the activities are generic and can be used to enhance the understanding of working with money.

Play with functions while you ponder Art History. Explore geometric transformations and transform your thinking about linear functions, then have fun figuring out the mystery functions!

Amazing videos to learn most anything related to math or science (and a bit of soc). Select Playlists from the top menu to see videos grouped by topic.

The goal of this task is to use ideas about linear functions in order to determine when certain angles are right angles. The key piece of knowledge implemented is that two lines (which are not vertical or horizontal) are perpendicular when their slopes are inverse reciprocals of one another.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.