Notice how magazines print photos using dots made up of percentages of only three colors and black. Try your hand at using percentages of cyan, magenta and yellow to match the magazine color displayed.

## Making a Line Plot

Practice creating a line plot. Use raisin counts for 17 boxes of raisins to graph the distribution of raisins per box.

## Making a Stem and Leaf Plot

A line plot may not be a useful graph for investigating variation so we must come up with a new representation based on groups of data. Construct a stem and leaf plot from a set of 26 data values.

## Making a Tree Diagram

A tree diagram is a helpful tool for determining theoretical or mathematical probabilities. Toss a coin and watch as branches represent a toss of either head or tails.

## Mass Units and Their Symbols

Study the names and abbreviations of mass units in both the metric and British systems. Then play a game to see how well you remember them.

## Measuring Learning

You will use contextual cueing to measure your ability for implicit spatial learning. Your task is simple: repeatedly search for an object hidden in a set of photos. The program will then give you information you can use to gauge your implicit learning.

## Measuring Short-Term Recall

Compare your recall of a list of non-words versus a list of words in timed sessions. Consider whether or not there might be bias in your experimental design.

## Measuring Steepness

Does the ratio of height to distance and the angle of elevation change as you move a ladder? Identify any patterns that exist between the height-to-distance ratios and the angles.

## The Median

Determine the median of eleven noodles. Consider what you would or would not be able to tell about the other noodles if you could only see the median noodle.

## Medieval Hats

Hats were an important part of medieval garb. Look at pictures of five medieval hats and try to determine which of the people listed wore which of the hats.

## Medieval M.D.

You are a doctor in the Middle Ages with three patients to cure. Read about their symptoms and decide what medieval treatment to prescribe.

## Melting Rocks

Turning solid rock into liquid magma involves changing its temperature, pressure and water content. Try your hand at melting rock to create magma.

## Metronomes

Compare the ticking of a metronome to a sine wave. Use interactive metronomes to explore the phenomenon of spontaneous synchronization.

## Mexico

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

## The Midline Cut

You can cut geometric figures into pieces that you can rearrange to form different geometric figures. Show how the midline cut of any triangle can be used to form a parallelogram. View non-Flash version.

## MiniMouseLab

Use a simulation to operate an elevator and see its motion. Examine the graphs that describe the motion you produce.

## Modeling Fractions With Cuisenaire Rods

Learn how to represent fractions with Cuisenaire Rods. Use these rods to perform operations with fractions.

## Monarch Butterflies

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

## Ms. Anwar's Backyard

Use the slider on the graph to see all possible shapes of Ms. Anwarâ€™s 2,000 sq. ft. backyard. Come up with an equation relating the length (x) and the width (y).

## Multiplication with Manipulatives

Area models can be used for many types of multiplication problems. Work with manipulatives to create area models for some multi-digit multiplication.