Moon: Terminator Motion

Moon's Terminator

Where Is the Moon’s Terminator? How Does the Terminator Appear to Move? As viewed from the Northern Hemisphere, the full moon phase appears to be a white disk-shaped object in the night sky.  From one day to the next, the white disk changes shape as the white, lighted part decreases. The line separating the lighted [...]

Engineer Working Models

Sound Model

Janice VanCleave’s Engineering for Every Kid: Easy Activities That Make Learning Science Fun This book contains research for different types of engineering as well as investigations that can be used as exploratory experiments in the design and developing of an engineering project. Designing! Developing! Testing! Engineers often design scale-models of large projects, such as buildings, [...]

Paramecium Model

protozoa paramecium

Pond water contains some living creatures that are so small they can be seen only with a microscope. Some of these creatures are made of only one cell, such as a paramecium. This tiny water critter is often called a “slipper animal” because it looks like the sole of a shoe. Paramecium move around in [...]