This task suggests methods of introducing and continuing choral counting in the classroom.

Teachers (and then students) lead the class in chanting numbers from 1 to 120.

The purpose of this task is for students to find different pairs of numbers that sum to 7.

This task is primarily about volume and surface area, although it also gives students an early look at converting between measurements in scale models and the real objects they correspond to.

Although this task is fairly straightforward, it is worth noticing that it does not explicitly tell students to look for intersection points when they graph the circle and the line. Thus, in addition to assessing whether they can solve the system of equations, it is assessing a simple but important piece of conceptual understanding, namely the correspondence between intersection points of the two graphs and solutions of the system.

Math 3 Circles. Circles and Lines Introduction Circles and Lines Lecture Circles and Lines Practice Circles and Lines Assignment Parabolas and Ellipses Introduction Parabolas and Ellipses Practice Parabolas and Ellipses Assignment Circles Lines Parabolas

Acc Math I ACC Math I Circlesand Spheres. Circles and Spheres Investigation Identify Radius Tangent Diameter and Secant Find Lengths in a Circle on a Coordinate Plane Find the Radius of a Circle Find the Measure of an Arc Use Congruent Chords to Find Arc Measures Use Inscribed Angles and Polygons

GSE Geometries 17 GSE Geometry Circlesand Volume Part 1. Angles Arcs and Segments. Introduction Circles and Volume Part One Key Terms Circle Basics Circles Theorems Constructions Circles and Volume Part One Wrap Up Circles and Volume Part One Final Assessments Constructing an Angle Bisector Constructing an Inscribed Circle of a Triangle Constructing the Perpendicular Bisector of a Segment

GSE Geometries 17 GSE Geometry Circlesand Volume Part 2. Arc Length Sector Area and Volume. Introduction Circles and Volume Part Two Key Terms Arc Length and Sector Area CrossSections and Solids of Revolution Cavalieri and Volume Circles and Volume Part Two Wrap Up Circles and Volume Part Two Final Assessments Arc Length Sector Area and Volume Wrap Up

This task shows that the three perpendicular bisectors of the sides of a triangle all meet in a point, using the characterization of the perpendicular bisector of a line segment as the set of points equidistant from the two ends of the segment. The point so constructed is called the circumcenter of the triangle.

This short video and interactive assessment activity is designed to give fourth graders an overview of angles.

This short video and interactive assessment activity is designed to teach third graders about classifying all types of triangles by lengths of sides.

This short video and interactive assessment activity is designed to teach fourth graders about classifying all types of triangles by lengths of sides.

This short video and interactive assessment activity is designed to teach third graders an overview of triangle classifications.

This short video and interactive assessment activity is designed to teach third graders about classifying triangles based on equal sides.

This short video and interactive assessment activity is designed to teach fourth graders about classifying triangles based on equal sides.

This short video and interactive assessment activity is designed to give fourth graders an overview of triangle classifications.