Read the lab procedure for a controlled experiment that looks at the effect of heat on the circumference of bicycle tires. step 1: pump up six identical bike tires to the recommended air pressure. step 2: place three tires under heat lamps, and keep the other three tires at room temperature. step 3: after four hours, measure the circumference of each tire. step 4: record your results in the table. step 5: which step should be next in this procedure? list the materials that are needed. write a conclusion for the experiment. write a hypothesis for the results. draw a table for the observations