Illustrative Mathematics
"Overview: 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...
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Building a Tile Pattern by Reflecting Octagons
"Overview: This task applies reflections to a regular octagon to construct a pattern of four octagons enclosing a quadrilateral: the focus of the task is on using the properties of reflections to deduce that the quadrila...
A-REI Reasoning with linear inequalities
"Overview: 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 address...
7.NS Distances Between Houses
"Overview: 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 address...
Closest to 1/2
"Overview: In this task using a number line, students must partition the interval between 0 and 1 into eighths. Subject: Mathematics, Numbers and Operations Level: Upper Primary Grades: Grade 3 Material Type: Activity/L...
Circumcenter of a Triangle
"Overview: 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 equidistan...
A-REI Pythagorean Triples
"Overview: 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 address...
7.NS Differences of Integers
"Overview: 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 address...
The Circle and The Line
"Overview: 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 assess...
Building a Tile Pattern by Reflecting Hexagons
"Overview: This task applies reflections to a regular hexagon to construct a pattern of six hexagons enclosing a seventh: the focus of the task is on using the properties of reflections to deduce this seven hexagon patte...
Christo's Building
"Overview: 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. Subject: Mathema...
A-REI Pairs of Whole Numbers
"Overview: 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 address...
7.NS Differences and Distances
"Overview: 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 address...
Christina's Candies
"Overview: The purpose of this task is for students to find different pairs of numbers that sum to 7. Subject: Mathematics, Measurement and Data Level: Lower Primary Grades: Kindergarten Material Type: Activity/Lab Auth...
A-REI Integer Solutions to Inequality
"Overview: 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 address...
Choral Counting II
"Overview: Teachers (and then students) lead the class in chanting numbers from 1 to 120. Subject: Mathematics, Numbers and Operations Level: Lower Primary Grades: Grade 1 Material Type: Activity/Lab Author: Illustrativ...
Building a Quadratic Function From F(X)=X2
"Overview: This is the first of a series of task aiming at understanding the quadratic formula in a geometric way in terms of the graph of a quadratic function. Subject: Mathematics, Functions Level: High School Grades:...
7.NS, 7.RP Temperature Change
"Overview: 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 address...
Choral Counting
"Overview: This task suggests methods of introducing and continuing choral counting in the classroom. Subject: Mathematics Level: Lower Primary Grades: Kindergarten Material Type: Activity/Lab Author: Illustrative Mathe...
Choices, Choices, Choices
"Overview: Arianna has been saving her chore money all summer. Her mother has allowed her to spend the money on school supplies of Arianna’s choosing. Here are some of her favorite items and the price for each Subject:...
A-REI Ideal Gas Law
"Overview: 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 address...