Presenting ... the gold standard for a lesson. Learners first investigate a task maximizing the area of a plot for gold prospecting. They then examine a set of sample student responses to evaluate their strengths and weaknesses.

High schoolers attempt an assessment task requiring them to find the radii of inscribed and circumscribed circles of a right triangle with given dimensions. They then evaluate provided sample responses to consider how to improve...

Investigate the different types of slope using graphs and ordered pairs. Scholars use the slope formula to determine the slope of a line between two points. Includes examples with a slope of zero and with no slope. The lesson follows a...

Is there a way to determine a winner of a political debate? Use a helpful rubric to evaluate the issues, specificity, evidence, reasoning, and delivery of candidates in a debate. After assessing each person's performance, high schoolers...

Using a carousel activity, class members gain an understanding of the idea of inferences by using pictures then connecting them to mathematics. Groups discuss their individual problems prior to sharing them with the entire class....

Give me a home where electric buffalo roam and I'll show you an ohm on the range. Introduction your classes to potential and kinetic energy, electricity, and renewable resources with a resource that combines observation, direct...

Every time a bell rings ... there is lightning in the area. The activity provides directions to build a model of a lightning detection system. Similar to a system designed by Benjamin Franklin, the system uses static...

Teams use the design process to design, build, and test a model levee to protect the town from a wall of water. A handout provides a price list for the materials learners can use to build their levee within a budget.

Ramp up the engineering design process in your classroom with an activity that challenges teams to design, build, and test a small-scale portable wheelchair ramp. The class develops design requirements, and teams test their designs...

Slopes are not just for skiing. Instructors introduce class members to the concept of slope and teach them how to calculate the slope from a graph or from points. The lesson also includes the discussion of slopes of parallel and...

Help class members become savvy consumers with a series of activities that has them analyzing marketing strategies, comparing the value of brand name versus off-brand clothing, and considering the advantages and...

Mortgages, payments, and wages correlate with each other. The short assessment presents scatter plots for young mathematicians to interpret. Class members interpret the scatter plots of price versus payment and wage versus payment for...

After an introductory activity to demonstrate the theory of a limit, additional activities approach a limit from graphical, numerical, and algebraic methods. The activity looks at the multiple ways of understanding and evaluating a...

Introduce learners to set of complete instructions that describe how to build a magnetometer that works just like the ones professional photographers use to predict auroras. The diagrams are wonderfully descriptive, and the written...

Could you live without your phone? What about cars, steel, or clothing? Class groups collaborate to produce presentations that argue that either the telephone, the gramophone, the automobile, the textile industry, or the steel...

Of all invertebrates, insects by far are the most numerous. Scholars discuss invertebrates and then use a key to classify them. They see different examples and must describe features of each organism based upon the key.