Abstract: A three-dimensional educational tool that demonstrates periodicity in science and mathematics and a method of using same. The educational tool has a frame with a top template, such as the periodic table of the chemical elements, having a plurality of openings and a plurality of members, representing chemical elements as an example embodiment disposed in the openings. The educational tool provides a plurality of trend blocks that rapidly change a three dimensions display of a plurality of members by selectively raising or lowering the members to demonstrate a particular characteristic of a member in relationship to another member. The trend blocks sit under the frame and the members slide up and down accordingly.