The activity set I would choose is “The Sun and the Shadows.” I would begin by introducing the children to the concept of shadows through a playground game of “Shadow Chasing,” followed by tracing shadows with chalk. I particularly like the idea of assigning the children the task of creating a sundial in groups, allowing them to track the sun and its movements. This activity also offers excellent opportunities for integration with other subjects: Math – lines and angles, time zones, etc., Science – Earth’s rotation, History – the use of sundials by ancient civilizations, Art – construction. In groups, the children would collaborate using paper plates, popsicle sticks, a protractor, and a compass to build a functional sundial. They would then observe and document the sun’s movements throughout the day