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New exercises from Khan Academy 2020-08-04T20:22:10.000000
Updated: 1 day 1 hour ago

Defining a procedure

Fri, 2020-05-08 19:52
Practice defining custom procedures for programs in the AP CSP pseudocode, in this set of free practice questions designed for AP Computer Science Principles students.

Solids, liquids, and gases

Fri, 2020-05-08 19:49
Practice interpreting particulate models of solids, liquids, and gases in this set of free questions designed for AP Chemistry students.

Normal distribution: Area between two points

Fri, 2020-05-08 19:49
Use a z-table to find the area between two given points in some normal distribution.

Exothermic and endothermic reactions

Fri, 2020-05-08 10:43
Let's practice problems involving exothermic and endothermic reactions.

Create two-way frequency tables

Thu, 2020-05-07 19:17
Given a Venn diagram or information about a relationship, create a two-way frequency table.

Compare 3-digit numbers

Thu, 2020-05-07 17:34
Practice comparing 3-digit numbers within 1000.

Properties of solids

Wed, 2020-05-06 23:48
Check your understanding of the properties of solids in this set of free practice questions designed for AP Chemistry students.

Read picture graphs

Wed, 2020-05-06 23:13
Use picture graphs to solve word problems.

Deviation from ideal gas law

Wed, 2020-05-06 21:11
Check your understanding of how real gases deviate from ideal behavior in this set of free practice questions designed for AP Chemistry students.

Area word problems

Wed, 2020-05-06 14:36
Let's solve a few real-world problems involving areas of rectangles.

Identify molecular formulas

Wed, 2020-05-06 05:49
Let's practice remembering molecular formulas for some common compounds.

Empirical rule

Tue, 2020-05-05 23:19
Practice applying the 68-95-99.7 empirical rule.

Normal calculations in reverse

Tue, 2020-05-05 22:09
Practice finding a value in a normal density curve given an area.

Land-Based Empires in Eurasia

Tue, 2020-05-05 20:51
Try it out!

The Big History Story

Tue, 2020-05-05 20:50

Era 1 Overview

Tue, 2020-05-05 20:49
Test your knowledge!

Estimating P-values from simulations

Sun, 2020-05-03 17:36
Use results of simulations to estimate P-values in significance tests.


Thu, 2020-04-30 19:05
Test your knowledge of biotechnology!

Represent rectangle measurements

Wed, 2020-04-29 23:17
Identify length, width, area, and perimeter on rectangles.  And identify equations that will help find unknown rectangle measures, like area and perimeter.

Solve problems with bar graphs 1

Wed, 2020-04-29 22:53
Read and interpret bar graphs.


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