Exploration Enter 4 onto the red pan. Then, enter 9 onto the blue pan. What happens? Why? Reset the balance. Enter 12 onto the red pan. Then, enter a sum (two numbers added together) onto the right ...

Use tiles to represent variables and constants, learn how to represent and solve algebra problem. Solve equations, substitute in variable expressions, and expand and factor. Flip tiles, remove zero ...

Discover a bold new vision for high school mathematics that empowers students through engaging, real-world learning. This essential publication reimagines the curriculum to focus on student-centered ...

NCTM established the Mathematics Education Trust (MET) in 1976 to channel the generosity of donors by creating grants for preservice teachers, in-service teachers, coaches, teacher-leaders, teacher ...

Change the number of sectors and increase or decrease their size to create any type of spinner. Then, conduct a probability experiment by spinning the spinner many times. How does the experimental ...

A net is a two-dimensional figure that can be folded into a three-dimensional object. Which of the nets below will form a cube? Click on any net, and determine whether or not it can form a cube. An ...

How do you help your students demonstrate mathematical proficiency toward the learning expectations of the Common Core State Standards (CCSS)? This teacher guide illustrates how to sustain successful ...

People of all ages love to play games that are fun and motivating. Games give students opportunities to explore fundamental number concepts, such as the counting sequence, one-to-one correspondence, ...

The purpose of this book study guide is to provide stakeholder groups with a tool to initiate needed critical conversations and actions in early childhood and elementary mathematics. Format: The book ...

I love the story of Carl Friedrich Gauss—who, as an elementary student in the late 1700s, amazed his teacher with how quickly he found the sum of the integers from 1 to 100 to be 5,050. Gauss ...

NCTM is here to support the mathematics education community, not just during challenging times like these but 365 days a year. With so many teachers currently transitioning to online teaching, we ...

Data science captures the complexity of data and data methods that have arisen with advances in technology. It is a collaborative science that uses complex data and methodology to identify and explain ...