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New exercises from Khan Academy 2020-05-29T13:47:37.544650
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Properties of exponents (rational exponents)

Mar, 2020-04-21 23:32
Rewrite some elaborate exponential expressions that involve fractional exponents and radicals.

Cross sections of 3D objects

Mar, 2020-04-21 20:35
Relate common 3D solids with their 2D cross-sections taken parallel, perpendicular, and diagonal relative to the base.

Midline of sinusoidal functions from equation

Mar, 2020-04-21 05:01
Given the formula of a sinusoidal function, determine its midline equation.

Finding definite integrals using area formulas

Mar, 2020-04-21 00:55
Practice evaluating definite integrals by finding the area using shapes (like rectangles & circles) under a function.

P-value in a two-sample t test

Mar, 2020-04-21 00:32
Practice calculating the P-value in a two-sample t test for the difference of means

Conditions for a t test about a mean

Mar, 2020-04-21 00:20
Check whether or not the the conditions have been met for a one-sample t test for a mean

Multiply and divide decimals by 10, 100, and 1000

Mar, 2020-04-21 00:17
Practice multiplying and dividing decimals by 10, 100, and 1000. For example, divide 31.4 by 100 to get 0.314.

Intermediate endocrine quiz

Lun, 2020-04-20 16:35
An intermediate quiz about the endocrine system

Conditions for inference on two proportions

Lun, 2020-04-20 04:25
Practice determining which conditions have and haven't been met for testing or estimating the difference between two proportions.

Multiply monomials by polynomials: area model

Sab, 2020-04-18 02:39
Use area to understand how to multiply monomials by polynomials.

Making appropriate scatter plots

Ven, 2020-04-17 23:02
An appropriate scatter plot has the independent variable on the x-axis and the dependent variable on the y-axis. Also, the scale of both axes should be reasonable, making the data as easy to read as possible. In these practice problems, we practice telling good scatter plots from bad ones.

Intermolecular forces and properties of liquids

Ven, 2020-04-17 16:58
Check your understanding of how intermolecular forces are related to boiling point and vapor pressure in this set of free practice questions designed for AP Chemistry students.

Definition of acids and bases

Ven, 2020-04-17 07:16
Let's practice the questions which helps to learn the definition of acids and bases.

Conduction and non conduction of electricity

Ven, 2020-04-17 07:04
Let's practice identifying substance conducting and not conducting electricity by giving reasons for the same.

Angled launch projectile vectors

Gio, 2020-04-16 21:51
Practice predicting how a projectile's velocity and acceleration components change throughout the trajectory.

Describing trends in scatter plots

Gio, 2020-04-16 21:43
Practice making sense of trends in scatter plots. That is, explain what trends mean in terms of real-world quantities.

Area & perimeter on the coordinate plane

Gio, 2020-04-16 20:59
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane.

Periodic trends of atomic size

Gio, 2020-04-16 12:19
Let's practice to learn the periodic trends in the atomic size of elements in the modern periodic table. Let's solve some questions to check the trends when we move from left to right (across the period) and top to bottom (down the group) of the periodic table.

Interpreting slope and y-intercept for linear models

Mer, 2020-04-15 23:07
Practice explaining the meaning of slope and y-intercept for lines of best fit on scatter plots.

Create bar graphs

Mer, 2020-04-15 17:52
Create a bar graph with the data given.


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