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New exercises from Khan Academy 2021-04-11T17:54:07.000000
Atualizado: 1 hora 59 minutos atrás

Biased and unbiased estimators

dom, 2021-04-11 17:54
Practice determining if a statistic is an unbiased estimator of some population parameter.

Sample means and the central limit theorem

dom, 2021-04-11 17:54
Practice using the central limit theorem to describe the shape of the sampling distribution of a sample mean.

Disruptions to ecosystems

dom, 2021-04-11 17:53
Test your knowledge of disruptions to ecosystems!

Unit fractions on the number line

dom, 2021-04-11 17:53
Use unit fractions to think about the location of other fractions on the number line.

Compare fractions with the same numerator or denominator

dom, 2021-04-11 17:53
Compare two fractions that have either the same numerator or denominator.  

Relate number lines to fraction bars

dom, 2021-04-11 17:53

Restrict domains of functions to make them invertible

dom, 2021-04-11 14:05
Given the graph of a function, find ways to restrict its domain in order to make it invertible.

Definition, measurement, and functions of money

dom, 2021-04-11 13:51
Practice and gain better understanding of the money supply and the purpose of money.

Name angles

dom, 2021-04-11 13:15
Name angles by their vertex, endpoints, or labels.  

Line integrals in conservative vector fields

dom, 2021-04-11 04:22
Practice computing line integrals in conservative vector fields with the fundamental theorem of line integrals.

Finding partial derivatives

dom, 2021-04-11 04:18
Compute partial derivatives. Practice ignoring certain variables when taking the derivative.

Graph labels and scales

dom, 2021-04-11 04:06
Given the graph of a real-world relationship, determine whether the labels and scales of the graph's axes are appropriate.

Comparing distributions

ter, 2021-04-06 22:24
Practice comparing distributions that are presented in dot plots, histograms, and box plots.

Sinusoidal models word problems

ter, 2021-04-06 19:44
Solve word problems that involve real-world contexts that are modeled by sinusoidal functions.

Solve sinusoidal equations

ter, 2021-04-06 19:42
Solve equations of the form a*sin(bx+c)=d or a*cos(bx+c)=d where a, b, c, and d are any number.

General triangle word problems

ter, 2021-04-06 14:35
Solve word problems that involve general (non-right) triangles using the law of sines and law of cosines.

Find trig values using angle addition identities

seg, 2021-04-05 15:56
Find the trigonometric values of various angles that (while they are not special angles) can be expressed as the sum or difference of special angles and vice versa.

Telling time word problems (within the hour)

seg, 2021-04-05 03:33
Solve a word problem to find the duration of an event.  Both analog or digital clocks are included.

Tell time to the nearest minute

seg, 2021-04-05 03:32
Practice telling time using analog clocks. Some clocks do not have labels.


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