Resources to mark the 100th day of school with math activities. Challenge students to generate 100 different ways to represent the number 100. Students will easily generate 99 + 1 and 50 + 50, but encourage them to think out of the box. Challenge them to include examples from all of the NCTM Standards strands: number sense, numerical operations, geometry, measurement, algebra, patterns, data analysis, probability, discrete math, Create a class list to record the best entries. Some teachers write 100 in big bubble numeral style and then record the entries inside the numerals.

Take a 10-minute guided tour of FRED, the St. Louis Fed's free economic data website. Simple step-by-step activities equip users to find and graph economic data, mastering FRED's look and feel. The guide also shows how to customize, save, and share a FRED graph.

The Washington State Women's Commission is commemorating the 100th anniversary of the 19th Amendment, which granted women the right to vote. These two videos are intended for educational purposes and to spark discussion about the importance of voting - "A Seat at the Table; Women's Sacred Right to Vote" and "The Untold Stories of Black Women in the Suffrage Movement"

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 potential use.

This short video and interactive assessment activity is designed to give fourth graders an overview of 24-hour clocks.

This Demonstration illustrates the concept of rotating a 2D polygon. The rotation matrix is displayed for the current angle. The default polygon is a square that you can modify.

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 asects of the task and its potential use. Here are the first few lines of the commentary for this task: Materials * How Big is a Foot? by Rolf Myller * Masking tape * Enough 12-inch (one foot) rulers for every student or pair of students * One yardstick *...

A mathematics task that involves a multi-step word problem related to addition and subtraction situations. Students are expected to model with mathematics as they complete the task. Task relates to standard 2.OA. A.1

This task has students solve a multi-step addition and subtraction problem based on a given data chart. Students are solving a variety of problem types involving addition and subtraction. This task is related to evidence statement 3.D.2 and Common Core Standard 2.OA.A.1

This task is related to Sub Claim C: Elapsed Time. Students are adding and subtracting time intervals on a number line. Standard 3.MD.1

This task challenges students to find the area of different sections of a garden and the entire garden. With missing lengths and widths, the students are challenged to apply computation skills to finding missing measurements.

This task requires students to find the area and perimeter of a rectilinear figure and model their thinking through multiple equations. This task relates to the Common Core State Standards: 3.MD.C.7d, 3.MD.D.8, and 3.OA.D.8.

This task requires students to find the area of a rectilinear figure and model their thinking through multiple equations. This task relates to the Common Core State Standards: 3.MD.C.7d and 3.OA.D.8.

This is a concrete referent reasoning task for Grade 3. Students need to use the diagram to find the information to find the area of a rectilinear figure. This is a task that would be a good starting point for solving problems for this standard.

A task related to standard 3.MD.7d, additive area of rectilinear figures. Students find the area of the parts of a pool to ultimately find the area of the entire pool.