The star of the show is ratios. The informative resource explains how to transpose music using ratios. Individuals transpose the song "Twinkle, Twinkle" in the activity by applying their ratio skills. The activity challenges class...

What did Earth look like 4.5 billion years ago, and what was the climate like then? Scholars explore a view of Earth throughout history. They observe continents moving, temperatures fluctuating, and huge changes in ecosystems. A activity...

After examining the accomplishments of George Crum, Ella Fitzgerald, James Baldwin, and Ernie Davis, class members conduct research, compare their lives and accomplishments, and then select from a menu of projects to share their...

Boo! Whether you're easily scared or enjoy a good fright, a reading passage on haunted house attractions is a great addition to a Halloween-themed unit. Learners read a short informational passage before answering multiple choice,...

As part of a study of women in Congress, groups analyze historical photographs associated with women's history and with women senators and representatives.

What is the role artifacts play in the study of past events and people? As part of an examination of the careers and contributions of women in Congress from 1917 to 2006, groups examine artifacts that symbolize each woman.

As part of a study of women in Congress, class members read the contextual essay, "A Changing of the Guard; Traditionalist, Feminist, and the New Face of Women in Congress, 1955–1976." Groups then research a woman serving during this...

Class members investigate congresswomen and the role these senators and representatives played in congress during the period from 1935–1954.

Francis Raoult discovered the change in boiling points of solutions varies by the number of particles in the solution. Scholars apply the concept to determine the molality of a solution based on the change in boiling point. They use an...

A reading comprehension worksheet traces the history of musical theatre. It starts with ancient Greece choruses and continues through the ballad and comic operas of the Renaissance, the operettas of Britain, France, and Germany, the...

Which is more likely: 130 children followed a magical piper out of Hamelin and disappeared forever, or that they died of the plague? Or could they have escaped from Hamelin via a secret tunnel to Transylvania? Learners investigate...

As part of a close reading activity, individuals respond to three questions and craft two short essays based on a passage about Islam, one of the world most widespread religion.

Words like another, each, several, and none can cause a lot of confusion in a sentence if their pronouns don't agree. Clear up pronoun-antecedent agreement problems with a series of grammar exercises that feature disagreements in number,...

How do you use a scale drawing to find the region in a lake where a treasure is located? The narrator of a short video problem identifies three criteria to determine the location of the treasure. Using a compass and ruler, he determines...

Where can it go? The first video on loci develops a definition and provides some quick sketches of the loci of all points with given characteristics. The presenter does an example of the loci of points a given distance from an L shape.

Try to find the middle of a frequency table. Using a frequency table of ages, the video shows how to use a formula to determine the position of the median. The resource uses frequency tables with both even and odd numbers of data points.

Light a fire in your pupils! Scholars conduct a flame test and observe the emission spectra of several different salts in an enlightening hands-on investigation. They use their observations to make comparisons and conclusions about the...

The calculator has an interesting way of displaying numbers in scientific notation, but don't let that confuse your pupils! A lesson designed to give learners practice with scientific notation and calculators provides several practice...

Acids and bases have a love-hate relationship. They balance each other so nicely, but they are complete opposites! Learners use these concepts and titration to calculate the molar mass of an unknown substance. The experiment document...

Many scientists attempted alchemy for hundreds of years before a full understanding of metals became clear. Scholars take a penny and, through two different chemical reactions, make it appear to turn into silver and later gold. They...

Humans tend to huddle together when cold and move around more when warm, but do gas particles follow the same pattern? Scholars use a temperature probe, a pressure sensor, and air to study the relationship between temperature and gas...

What in the world are they doing? Given two graphs, scholars interpret the graphs and connect them to a real-world situation. They must also draw a graph given information about a context.

Where is the point? Given three points on the coordinate plane, the video walks through the steps to find the location of the fourth point to create a given special quadrilateral. The narrator first determines the coordinates of the...

Closer to this point and farther from that one. Continuing with loci problems, a short video shows how to work problems that are not straightforward. The presenter works loci problems that result in a region that meets several criteria.