1. That is the fun testing period! Hand out the worksheets and have students fill in the table to maintain observe of the measurements and testing outcomes for each bridge. 2. Earlier than breaking, measure and file the bridge mass (in grams). 3. Place the bridge prototype into the weight-loading setup—such as resting each bridge end on the edges of two tables positioned a foot apart. Astronomy has fascinated humans for میعاد بتن centuries, and building your individual telescope is an thrilling method for the entire family to discover the wonders of the night sky. Using easy supplies like PVC pipes, lenses, and mirrors, youngsters can construct their own telescopes and be taught about the ideas of optics, astronomy, and the huge universe.