This task presents a real world situation that can be modeled with a linear function best suited for an instructional context.
This task is intended strictly for instructional purposes with the goal of building understandings of linear relationships within a meaningful and, hopefully, somewhat familiar context.
In this task students use different representations to analyze the relationship between two quantities and to solve a real world problem. The situation presented provides a good opportunity to make connections between the information provided by tables, graphs and equations.
This short video and interactive assessment activity is designed to teach fourth graders about choosing the correct unit with liters or milliliters.
This short video and interactive assessment activity is designed to teach fifth graders about choosing the correct unit with liters or milliliters.
In this video segment from Cyberchase, the CyberSquad must locate a crystal with the highest fraction of orange color.
This short video and interactive assessment activity is designed to teach third graders about choosing the multiples of a given number up to 12.
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.
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 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 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 fourth graders about classifying triangles based on equal sides.
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 give fourth graders an overview of triangle classifications.