Class members will dig this activity that has them trying their hand at recovering artifacts. Groups are assigned a section of a sandbox, carefully uncover the artifacts in their section, and then develop theories about who might...

West of the West's documentary Arlington Springs Man introduces viewers to the remarkable finds on Santa Rosa Island. Archaeologist have discovered on this small island that is part of the Channel island chain, human and pygmy mammoth...

Alphabet insects! Who has ever heard of such a thing? Get ready because your class is going to research insects that start with a specific letter of the alphabet. In small groups, they'll use the Internet and reference texts to locate...

The power to solve exponential equations lies in the resource. Scholars first learn how to solve exponential equations. An activity matching cards with equations, intermediate steps, and solutions strengthens this skill.

Fourth-grade writers applaud their historical narrative writing pieces through a Writer's Gallery. First, they read an assigned classmate's work and leave a positive comment on a sticky note. Once learners have read a couple of people's...

Thanksgiving doesn't occur only once a year for the Haudenosaunee. Weave an instructional activity about reading closely with an inspiring message about eternal gratitude for all of the elements of creation into a unit on Native American...

Young writers use the four-square graphic organizer to draft their historical fiction narratives' first, second, third, and fourth paragraphs on the wheelwright. The instructional activity promotes discussion and modeling of what makes a...

Encourage young writers to edit text based on conventions. After reviewing the conventions, fourth graders watch a teacher demonstrate how to revise a paragraph for correct spelling, capitalization, punctuation, or dialogue. Then, pairs...

So the mean is not always the best center? By working through this exploratory activity, the class comes to realize that depending upon the shape of a distribution, different centers should be chosen. Learners continue to explore...

Collaborative groups utilize their knowledge of parent functions and transformations to determine the equations associated with graphs. The graph is then related to the scenario it represents. 

The process of elimination really works! Use elimination when substitution isn't doing the job. The 29th segment in a series of 33 introduces the elimination method to solving linear systems. Pupils work several exercises to grasp the...

Everybody loves video day! Grab your class's attention with this well-designed and engaging resource about graphing. The video introduces a scenario that will be graphed with a piecewise function, then makes a connection to domain...

Time to revise! Using a writing evaluation rubric, scholars participate in a peer editing process to provide feedback on each others' informative essays. Next, pupils begin revising their drafts based on the feedback they receive. 

Amaze your classes with the ability to find side lengths of triangles immediately — they'll all want to know your trick! Learners use the Pythagorean Theorem and special right triangle relationships to find missing side lengths.

First angle measures, now segment lengths. High schoolers first measure segments formed by secants that intersect interior to a circle, secants that intersect exterior to a circle, and a secant and a tangent that intersect exterior to a...

Looking for an alternative approach to long division? Show your classes how to use factoring in place of long division. Increase their fluency with factoring at the same time!

Don't leave your classes vulnerable in their calculations! Help them understand the importance of calculating a margin of error to represent the variability in their sample mean. 

Learn how to increase the probability of success. The 19th installment of a 21-part module teaches future mathematicians how to use probability to analyze decisions. They determine strategies to maximize the chances of a desired outcome.

Find Pythagorean Triples like the ancient Babylonians. The resource presents the concept of Pythagorean Triples. It provides the system of equations the Babylonians used to calculate Pythagorean Triples more than 4,000 years ago. Pupils...

Young mathematicians identify different cases of intersecting secant lines. They then investigate the case where secant lines meet inside a circle.

Banks are responsible for keeping our financial information safe. Mathematics is what allows them to do just that! Pupils learn the math behind the cryptography that banks rely on. Using polynomial identities, learners reproduce the...

Many things in life take the shape of a polynomial curve. Learners design a polynomial function to model a riverbed. Using different strategies, they find the flow rate through the river.

All data is not created equal. Scholars examine the different types of studies and learn about the importance of randomization. They explore the meaning of causation and when it can be applied to data. 

Increase your sample and increase your accuracy! Scholars complete an activity that compares sample size to variability in results. Learners realize that the greater the sample size, the smaller the range in the distribution of sample...