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New exercises from Khan Academy 2020-07-13T15:05:54.000000
Actualizado: hace 2 horas 41 mins

Using the mirror formula

Jue, 2020-07-02 13:54
Let's practice calculating distances in optical measurements with spherical mirrors using the mirror formula.

Applications of concave and convex mirrors

Jue, 2020-07-02 13:54
Let's practice problems involving applications of concave and convex mirrors.

Convex and concave lenses

Jue, 2020-07-02 13:53
Let's practice problems involving both the lens and magnification formulas in convex and concave lenses.

Multiply & divide complex numbers in polar form

Jue, 2020-07-02 05:40
Given two complex numbers in polar form, find their product or quotient.

Metals used in alloys

Jue, 2020-07-02 05:05
Let's practice to know the metals that make up an alloy.

Reactivity of elements

Jue, 2020-07-02 05:01
Let's practice to identify the more reactive and less reactive elements.

Solubility

Jue, 2020-07-02 01:21
Check your understanding of the relationship between solubility and intermolecular forces in this set of free practice questions designed for AP Chemistry students.

Reflective symmetry of 2D shapes

Mié, 2020-07-01 22:29
Analyze various shapes according to their reflective symmetries.

Line and angle proofs

Mié, 2020-07-01 22:27
Prove theorems about lines and angles using triangle congruence criteria and algebra.

Equal parts of circles

Mar, 2020-06-30 18:03
Practice telling if circles are divided into 2, 3, or 4 equal sections.

Equal parts of rectangles

Mar, 2020-06-30 18:03
Practice telling if rectangles are divided into 2, 3, or 4 equal sections.

Identify shapes

Mar, 2020-06-30 18:02
Practice identifying quadrilaterals, triangles, and circles.

Length word problems

Mar, 2020-06-30 17:57
Add and subtract lengths to solve word problems. All problems are in meters and centimeters. 

Estimate lengths

Mar, 2020-06-30 17:34
Estimate lengths using units of centimeters and meters.

Estimate lengths (US Customary units)

Mar, 2020-06-30 17:33
Estimate lengths using units of inches and feet.

Integral test

Mar, 2020-06-30 15:43
Use the integral test to determine whether a given series is convergent or divergent.

Text structure: science 4

Mar, 2020-06-30 15:05
Text structure: science 4th grade

Count money (U.S.)

Mar, 2020-06-30 15:03
Find the total value when given an amount of coins or dollars.

Acidic, basic, and amphoteric oxides

Mar, 2020-06-30 08:58
Let's practice identifying acidic, basic, and amphoteric oxides by knowing their reactions with acids and bases.

Coordinate plane word problems: polygons

Lun, 2020-06-29 20:13
Use the coordinate plane to compare distances and areas in applied contexts.

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