Calculator Teacher Resources

Here is a nice presentation on time; how to read analog clocks and calculating elapsed time. The graphics, and problems posed in this PowerPoint are especially good. One nice feature is that students are encouraged to work together in...

High school physics or engineering classes construct a system for piping water from a storage tank to a water dispenser. They will apply Bernoulli's principle and perform calculations for elevation, pressure, and velocity. This is a...

Experiment with chocolate coating on cookies! What a delightful way to learn about food processing and chemical engineering. Throughout this activity, groups collect measurements and make calculations. They conclude by writing...

If you are beginning a unit of study on atoms, this presentation would be an excellent way to begin! In it, learners discover many facts about atoms. For example, it would take 50,000 aluminum atoms stacked together to equal the...

Adding fractions with unlike denominators is a difficult process to master. This fine presentation does a terrific job of leading young math whizzes through the steps necessary to perform this calculation. The slides have clear graphics,...

After learning to calculate probabilities for single examples of genetic crosses in a previous lecture, students are exposed to the concept that allele and genotype frequencies in a population remain in constant equilibrium. A reasonable...

The topics in the previous video about dominant and recessive traits are continued here as Sal Khan explains incomplete dominance, the randomness of genotypes and phenotypes, and covers how to calculate probabilities using Punnett...

Sal continues this short series on specific heat and vaporization. The situation he poses uses 500 grams of liquid water at 60 degrees Celsius, with the goal of getting the water to 0 degrees Celsius. The ice he adds to the water comes...

In this chemistry video, Sal takes a closer look at what happens to the change in enthalpy during a chemical reaction. He points out that the enthalpy change, given constant pressure, becomes the heat added to the system at that constant...

Figuring out the partial pressures of various gases in a container is the focus of this chemistry video. Sal sets up a problem where a balloon is filled with three different types of gases: oxygen, hydrogen, and nitrogen. The goal is to...

In his previous videos, Sal shows students how to calculate how much energy is needed to change various amounts of water from state to state when the atmospheric pressure is constant. In this video, he shows students how to use phase...

Sal continues his explanation of The Ideal Gas Equation in this chemistry video. He sets up a different problem from the previous video, and uses the ideal gas equation to calculate how many grams of Oxygen are present in a 300 ml...

Sal continues his discussion of spontaneous reactions by setting up a reaction between two substances, and using the Gibbs Free Energy method to determine its spontaneity. This video is extremely heavy on the math, and it would be useful...

In the world of chemistry, efficiency is defined as: the work a system does, divided by the energy given to that system to complete the work. Sal illustrates this important chemistry concept by drawing a PV graph that shows a Carnot...

The reaction of Phosphorus and Chlorine is the focus of this video on Stoichiometry. Sal sets up a reaction between the two substances, and uses the process of Stoichiometry in order to calculate how many grams of Phosphorus Trichloride...

A problem from a chemistry textbook is posed on the screen. Sal solves the problem which attempts to calculate vapor pressure using the Ideal Gas Law. The rate of evaporation of water given a certain volume, temperature, and pressure is...