Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Ordering Hats

Click through each representation to see how the display of relative frequency relates to the display of cumulative frequency and their corresponding histograms. Examine how each method is useful for summarizing the variation in numeric data.

Organizing Data in a Stem and Leaf Plot

A stem and leaf plot is a graphical representation for investigating variation. You will convert an ordered stem and leaf display grouped by tens into an ordered display grouped by fives.

People Patterns

Observe a line of people, discover a pattern and figure out who should come next. See if you can complete a pattern of 10 people before the penalty word "Pattern" is spelled out.

The Perpendicular Bisector

Watch as the triangle is reflected over the perpendicular bisector. Practice reflecting other figures.

Placing Artifacts in Time

This interactive focuses on the concept of Chronological Thinking. Using the example of Pocahontas, explore how historical representations change over time, and often reflect the period in which the representation was created.

Plate Interactions Challenge

Identify real-world cases of boundary interactions and predict the most likely future geologic outcomes. In the lightning round, unscramble four geologic terms

Plates & Boundaries Challenge

Place the names of fifteen tectonic plates on the map. Then identify the type of boundary (convergent, divergent or transform) between several of these plates.

Playing with Quadperson

Compare the effects of relative and absolute changes on a picture. Watch what happens to a Quadperson (a drawing of a face made of quadrilaterals) if every line were made half as long or made a half-inch shorter.

Plot Plans and Silhouettes

Plot out a three-dimensional structure based on two-dimensional silhouettes. Look at the front and side view of figures and use a table to plot out the dimensions that mathematically represent the figures.

Polygon-Classification Game

Click all the polygons to see which Venn diagram circle they belong to. Then try to determine the correct labels for each of the circles. View non-Flash version.

Practice Conversion Problems: Multiple Conversion Factors

If you don’t know the conversion factor between a metric and a British unit, use the conversion factors you do know even though this may require more than one conversion step. Practice conversion problems with multiple conversion factors.

Practice Conversion Problems: Two Conversion Factors

If you don’t know the conversion factor between a metric and British unit, use the factors you do know even though this may require more than one step. So if you need to go from meters to inches start with meters to feet and then convert feet to inches.

Puerto Rico

Practice some of the vocabulary and grammar covered in the Puerto Rico episodes of Destinos.

Quick Images

Stretch both your visualization and drawing muscles. View a shape for three seconds and then try to draw it from memory. View non-Flash version.


Copy a quilt block made of 16 squares. Each block will have one of the four symmetry types: H, M, B, or S and you choose which you think it is.

Random Sampling

Sampling can produce measurement bias. See if you can personally select a sample that is representative of a particular population.

Reaction Time

You'll be challenged to test your reaction time under different conditions and then compare the results. You'll find out how processing in the brain changes reaction time under different conditions: being distracted, being presented with emotionally charged stimuli, or being faced with increasing complex tasks.

Reading Maps

Learn the visual language of maps (perspective, symbols and data) and see how mapping techniques have changed over time. Practice looking at maps as historical artifacts.

Reasoning About Fractions

Apply the reasoning and proof standard to a problem based on the Fraction Tracks game. Observe as students use a linear model as well as hands-on materials to solve the same problem.

The Rectangle Method

One approach for finding area is to surround the shape with a rectangle, determine the areas of the rectangle and subtract the pieces of the rectangle that are outside the original shape. Use this geoboard to create shapes and determine their areas.

Grade Levels



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