Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup

Accuracy vs. Precision

Measure the length of the notepad and desk in millimeters and centimeters and their mass in kilograms and grams. Notice how the precision and accuracy differ for each measuring device.

Alien Eyes

Explore parallax which causes each of your eyes to produce slightly different images. Then imagine yourself an alien and try to predict which images each of your four eyes see.

American Robin

Observe robins and report their sightings online. Share and review the sightings with other students/classrooms to track hemispheric migratory patterns.

Analyzing a Lesson

Examine how elements of teaching for understanding are incorporated in a lesson. Enter your examples of how the element is used in the lesson, and then compare your answers to other teachers’ answers.

Analyzing a Project Description

Read the project description for students creating a children’s storybook. Analyze the text based on five elements (describe task, achieve authenticity, establish criteria, clarify strategies, communicate rubric).

Analyzing a Writing Mini-Lesson

Observe a veteran teacher and her fourth-graders in a mini-lesson on adding detail to narrative writing. Consider the purpose and effectiveness of each part of the lesson and compare your observations with those of another teacher.

Area and Perimeter

Create several rectangles with areas of 16 square units and calculate the perimeter. Predict how the length and width of the rectangle affects the perimeter.

Area Model for Multiplication

Area models offer a visual representation of mathematical operations. Here you will use area models to multiply and reduce fractions.

The Area Model

Use area models to find either the greatest common factor or the least common multiple of two numbers.

Arm Span and Height Measurements

Measure your arm span and height. See how your measurements compare to others when your data is added to a data table and corresponding scatter plot.

Arrays and Fractions

What opportunities for learning are offered by having students work on a problem using both arrays and fractions? Decide whether or not using an array is the best way to solve a problem.

Assess a Peer Conference

Watch a video of two student peer conferences and compare your evaluation of those conferences to another teacher's.

Assessing Comprehension

Read a fable and listen as two students retell the story in their own words. Assess their comprehension using the Retelling Guide provided.

Assessing Student Letters

Assess two drafts of students’ letters using criteria presented as a four-point-scale rubric.

Balance Scale Activity

Use your intuition about balance to keep a scale balanced.

Balancing Excesses and Deficits

Create a line plot [with dots] to represent stacks of coins. Then rearrange the dots to form different line plots and watch what happens to the mean.

Bald Eagles

Track bald eagle migration. Report your sightings and observations to the bald eagle tracking map.

Building From Directions

Use blocks to build a design from a written description. Try various descriptions to achieve the correct design. View non-Flash version.

Building the Number Line

Classify the different types of numbers we use, and learn how numbers and operations relate to one another. Start with counting numbers and then add integers, rationals, algebraic, and, finally, real numbers to the line.


Play an animation that incorporates most types of energy transfers and conversions into a chain reaction. Then rerun the animation and answer questions to test your understanding of how energy can travel and change.

Grade Levels



Required Software