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This activity is a hit for family events and all ages—some will finish in 45 minutes; others can go on for hours.

In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

In this three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

This is a perfect summertime lunch activity! Pico Cricket is required (micro controller). First, get a bunch of cut up fruit, line them up, then plug a piece of fruit with a Pico Cricket sensor clip.

In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.

Learners create an Incan counting device called a quipu (pronounced kee-poo).

In this on site "field trip" activity (located on pages 6-9 of PDF), learners get hands-on experience identifying building materials by playing "Building Bingo".

In this activity with several mini experiments, learners explore the chemistry that helps scientists learn about the environment and how they can help save it.

In this activity, learners imagine what the world might look like if we could build an elevator to space!

In this activity, learners explore how engineers have improved roofing designs and materials in order to protect the contents of buildings.

In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use.

This fun and simple hands-on astronomy activity lets learners explore model planets (that they or an educator will create), using methods NASA scientists use to explore our Solar System.

In this activity, learners explore how the process of folding has impacts on engineering and is evident in nature.

In this activity, a group of learners work collaboratively to design and construct a paper model showing the evolution of an environment through multiple stages, from prehistory through the modern cit