CK-12 Foundation
Addition of Integers: Adding Electrons
Young mathematical scientists interact with protons and electrons in an atom to create a neutrally charged atom. They answer questions based on their findings throughout the interactive resource.
Marcia's Science Teaching Ideas
Observing the Moon Activity
In this moon worksheet, students observe the moon on three consecutive nights and draw their observations. They answer questions about the phases of the moon and its position in the night sky. They identify the position of the sun, earth...
Curated OER
Vision Props of Signed Numbers
Young scholars explore the concept of titration. For this titration lesson, students observe acid and alkaline reacting. Young scholars discuss pH factor, measuring acidity, neutrality, and alkalinity of liquids. Students put the pH of...