We expect approximately 80 first graders and will divide them into two groups of about 40 students. Each group will participate in a 90-minute session featuring two hands-on projects to take home and one instructor-led demonstration. Together, the activities introduce students to lenses, ultraviolet light, and shadows. Build a Galileo-style telescope | Take-home project Students will assemble a simple telescope and use it to look at a distant object. They’ll explore how lenses work together to make objects appear closer and learn how Galileo used a telescope to study the night sky. Make a color-changing UV bead bracelet | Take-home project Students will make their own bracelets and predict what will happen when the beads are exposed to sunlight. They’ll observe the color change and discover that sunlight contains ultraviolet (UV) light, which our eyes can’t see. Tell time with a sundial | Demonstration We’ll demonstrate how a sundial uses a shadow to tell time. Students will see how the shadow changes direction as the Sun appears to move across the sky and learn how people used this pattern to tell time before mechanical clocks.