3D printers, selfie sticks, smart watches. GPS, self-driving cars, YouTube. Imagine life without inventions. Believe it or not, these items were all invented in the last 10 years. Inventions, and the inventors responsible for them,...

Young voyagers face the challenge of the wide dark sea, travel with Yunmi and Halmoni, and even get trapped by the ice as they explore the reading selections offered in these enrichment activities designed for the Houghton...

Water is the source of life. It appears in poetry in both peaceful and torrential descriptions; it appears in earth science in its liquid, gaseous, and solid states. Combine these interpretations of our planet's most precious and...

Although the methods are all scientific, forensic science was started by police officers rather than scientists, who relied on observation and common sense. Young detectives use many tools to solve crimes around the school in a...

It's a classification sensation! Demystify why we classify using an inquiry activity that helps your class sort things out. Groups begin by classifying a variety of shoes before they research organisms and design their own dichotomous...

Examine the behavior of energy as water freezes and melts. An engaging activity provides a hands-on experience to learners. Collaborative groups collect data and analyze the graphs of the temperature of water as it freezes and then...