Each group needs:

• 1 eyepiece lens (150 mm concave lens, https://www.homesciencetools.com/product/lens-double-concave-150mm-f-l)
• 1 objective lens (500 mm convex lens, https://www.homesciencetools.com/product/lens-double-convex-500mm-f-l)
• 1 optical tube (e.g., multiple sheets of black construction paper)
• 1 meter stick or measuring tape
• Telescope Activity Worksheet (1 per student) or access to the Telescope Building Notebook PowerPoint
• 1 laptop or tablet with access to internet to view videos noted in the Telescope Activity Worksheet
• 1 smartphone

For the class to share:

• 1 red light bulb (https://www.amazon.com/Colored-Equivalent-Halloween-Christmas-Ambiance/dp/B08NV7KN3X)
• 1 lamp base (any lamp base that can hold the red light bulb)
• (optional) lens wiper or eyeglass/microfiber cloths

Note: For a class of 20 students, it is recommended to have approximately 10 eyepiece lenses, 10 objective lenses, multiple sheets of black construction paper, 1 red light bulb, and 1 lamp base.

Construction materials

• masking or blue tape
• glue
• duct tape
• scissors
• miscellaneous construction materials that could be used to create a sturdy optical tube, such as the following:
• multiple layers of newspaper or construction paper
• recyclable materials (paper towel rolls, toilet paper rolls, other ideas students produce)
• (optional) 3-inch mailing tubes: https://www.amazon.com/Earth-Hugger-Mailing-Tube-37022-EH/dp/B011Y5ZMZC
• (optional) 2-inch craft rolls: https://www.amazon.com/30-Pack-Craft-Rolls-Cardboard/dp/B07SLV4R67