According to piaget's theory, children who use hypothetical-deductive reasoning to solve the pendulum problem and can provide a rationale for their solution are closer to the stage of cognitive development.

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

State law requires you to inform the secretary of state''s office of an address change within days.

Amember of congress acting as a trustee casts a vote for a bill based on his or her