## Shopping cart

 0 Items Total: MXN\$0.00

New exercises from Khan Academy 2019-12-06T13:46:57.421762
Updated: 36 min 29 sec ago

### Tangents to polar curves

Mon, 2019-10-28 16:44
Practice tangent lines of functions defined with polar coordinates.

### Describing graphs

Mon, 2019-10-28 10:51
Tests terminology.

### Selection and genetic drift

Mon, 2019-10-28 10:33
Test your knowledge on selection and genetic drift!

Fri, 2019-10-25 20:14
Practice interpreting what the features of a graph representing a quadratic relationship mean in terms of a given context.

### Ratio tables

Fri, 2019-10-25 16:31
Practice filling out tables of equivalent ratios.

### Evaluating expressions with one variable

Thu, 2019-10-24 19:56
Practice plugging in a value for the variable in an equation. These are introductory problems, so the expressions aren't too complicated.

### Short-run production costs

Wed, 2019-10-23 16:10
Practice what you have learned about short-run production costs in this exercise.

### The Red Scare

Wed, 2019-10-23 15:03
Test your knowledge on the Red Scare!

### Similarity & transformations

Tue, 2019-10-22 19:31
Given two polygons, try to map one onto the other using angle-preserving transformations, and determine whether they are similar.

### Systems of equations word problems capstone

Tue, 2019-10-22 17:59
Solve word problems that involve systems of equations, where there can either be a single solution, no solution, or infinite solutions.

### Multi-digit division

Mon, 2019-10-21 21:33
Practice dividing multi-digit whole numbers. These problems use remainders.

### The Cold War (1945-1980)

Mon, 2019-10-21 20:12
Test your knowledge on the Cold War era!

### Markets, property rights, and the law of demand

Mon, 2019-10-21 18:56
Practice what you have learned so far in this lesson. Topics include the role of property rights in markets, the income effect, and the substitution effect.

### Total Utility and Marginal Utility

Mon, 2019-10-21 18:46
Practice what you've learned about total utility, marginal utility, and the law of diminishing marginal utility in this exercise.

### Equivalent ratio word problems (basic)

Mon, 2019-10-21 18:33
Solve equivalent ratio word problems.  The numbers used are small enough to solve using discrete diagrams.

### Finding the critical value z* for a desired confidence level

Mon, 2019-10-21 18:28
Practice finding the critical value z* for some given confidence level.

### Electron configurations

Mon, 2019-10-21 16:25
Practice writing electron configurations

### Evaluate expressions with parentheses

Fri, 2019-10-18 20:18
Evaluate multi-step expressions with parentheses.  Place parentheses in an expression to make the expression equivalent to a given number.

### Area and the distributive property

Fri, 2019-10-18 18:38
Use area models to represent the distributive property in finding area of rectangles.

### Rules that relate 2 variables

Fri, 2019-10-18 15:01
Identify the rule that describes the relationship between the x- and y-coordinates in a table or set of coordinates.