Illustrative Mathematics
Illustrative Mathematics: Hsa ced.a.2 Create Equations in Two or More Variables
Choose from a variety of creative problems (tasks) to teach how to create equations in two or more variables to represent relationships between quantities and graph equations on coordinate axes with labels and scales. Explanations and...
Illustrative Mathematics
Illustrative Mathematics: 7.ee Ticket to Ride
In this lesson, 7th graders rewrite an expression to help determine a solution.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.2: Throwing a Ball
Using a ball thrown vertically as the real life scenario, this task has a couple of aspects designed to encourage learners to attend to the structure of a given equation and the meaning of the variables in it. Aligns with HSA-CED.A.2.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.4: Rewriting Equations
The goal of this task is to manipulate equations in order to solve for a specified variable. Aligns with HSA-CED.A.4.
Illustrative Mathematics
Illustrative Mathematics: Counting Cup
Students will count counters, draw a picture of the counters, and record the number in a booklet. A list of materials and how to put together the booklet is included. This activity is most effective if initially it is done daily with all...
Illustrative Mathematics
Illustrative Mathematics: Equality Number Sentences
Students will compare the number of circles in two boxes. If they are equal, they will write a number sentence. Explanations and examples are included.
Illustrative Mathematics
Illustrative Mathematics: Comparing Numbers
This task is a fun partner game in which students practice making two-digit numbers, decide which is greater, and write the appropriate comparison symbolically.
Illustrative Mathematics
Illustrative Mathematics: Counting Overview
The most important factor in teaching counting is that children count things that matter to them, and that they practice often. This site gives various examples of how to incorporate counting into your classroom on a daily basis by...
Illustrative Mathematics
Illustrative Mathematics: 6.ee,g Sierpinski's Carpet
In this task, 6th graders are presented with a large square divided into 9 squares and the center square is then removed. They are asked to find the area of the 8 remaining squares. Each smaller square is divided in the same way and the...
Illustrative Mathematics
Illustrative Mathematics: A rei.c.6: Accurately Weighing Pennies I
In this problem, learners will use the number of decimal places in the coefficients to motivate writing and solving a system of equations. Aligns with A-REI.C.6.
Illustrative Mathematics
Illustrative Mathematics: F If.3 Snake on a Plane
In a video game called Snake, a player moves a snake through a square region in the plane, trying to eat the white pellets that appear. This task has young scholars approach a function via both a recursive and an algebraic definition, in...
Illustrative Mathematics
Illustrative Mathematics: 5.nbt Comparing Decimals on the Number Line
This task presents four pairs of decimal numbers and asks students to compare them and place them on number lines. Aligns with 5.NBT.A.3.
Stanford University
Stanford Encyclopedia of Philosophy: Aristotle
Looks at the life of Aristotle (384-322 B.C.E.) and the far-reaching scope of his intellectual ideas. The article examines in depth his theories in the disciplines of philosophy, politics, mathematics and science, and his legacy.
PBS
Pbs Kids Afterschool Adventure!: Operation: Martha's Stem Stories Activity Plan
Welcome to Martha's STEM Stories! STEM stands for science, technology, engineering, and mathematics. You may already know that doing STEM means testing ideas, collecting data, making calculations, and drawing graphs and charts-but you...
PBS
Pbs: Kid Vid: Dividing Mixed Numbers and Fractions
Critique a peer's thinking about two division word problems, one with whole and mixed numbers and one with two fractions, in this interactive from KET. Students watch a video of a student thinking through two word problems that involve...