Kenan Fellows
Balancing Equations Using Matrices
Matrices help solve systems of equations in chemistry, computer graphics, circuitry, probability, and more. The second lesson in a seven-part series focuses on using matrices to balance chemical equations. Pupils rely on the Law of...
Curated OER
The Cuisenaire Four-Pan Algebra Balance: Limitations and Suggestions
Learners illustrate the concept of balancing equations using a Four-Pan Algebra Balance. In this balancing lesson, students visualize why it is necessary to add or subtract the same quantity on both sides of an equation when solving...
Kenan Fellows
Isotopic Pennies
Many people confuse atomic mass and atomic numbers. The sixth of seven lessons in a unit requires scholars to find the weight of different groups of pennies. Then, they must solve how many of each type of penny exists in a closed system...