This is a record sheet for an experiment we used for a class science fair project (but could also be used in a small group or individual experiment as well).
Since we live in the south where winter weather can be unpredictable and causes our roads to be very icy and dangerous, we wanted to find out which of the 3 items (air, water & salt) would melt ice the fastest. This experiment was completed in approx. 20 minutes.
My students first predicted on their record sheets which one they thought would melt the ice fastest. Then I placed 3 ice cubes on paper towels and labeled each. Nothing was put on the first cube (air), water was placed on the second, and salt poured onto the third. A timer was set for 2:30 minutes. After that time, they observed what was happening with the ice. Students drew/wrote what they observed in box #1. The timer was set again for 2:30 minutes, and again, students recorded their observations before the timer was set a third time. By that time, it was obvious which melted the ice the fastest. Students compared their predictions with the results, and wrote about their learning. I took up the record sheets and combined them into a book for our journal portion of the science fair.
My students loved this experiment and several even went home to do this experiment with their families!