# Khan/khan-exercises

Use integer data forms on All the Exercises!

Summary:
Okay, not all of them. But a lot of them.

Use number field on Changing Decimals to Percents.

Use integer data form for Converting Between Point Slope and Slope Intercept.

Use type=number fields on Converting Between Point Slope and Standard Form.

Use integer data form in Domain and Range of a Function 0.5.

Use integer data form in EQuation of a Circle 1, 2

Use integer data form on Equation of an Ellipse.

Use integer, decimal data forms for Inscribed Angles 1, 2, 3

Use integer data form on Matrix Addition and Subtraction.

Use integer data forms for Matrix Dimensions.

Use integer data forms on Matrix Transpose.

Use integer data forms for Measuring Angles.

Use integer data form on Multiplying a Matrix by a Matrix.

Use integer data form on Multiplying a Matrix by a Vector.

Use integer, decimal data forms on Multiplying and Dividing Scientific Notation.

Use integer, decimal data forms on Multiplying Complex Numbers.

Use integer data form in One Step Equations.

Use integer data form in Perimeter 1.

Use integer data form in Perimeter of Squares and Rectangles.

Use integer data form in Pile Patterns.

Use integer, decimal data forms in Plugging in Values.

Use integer data form for Quadrilateral Angles.

Use integer and decimal data forms for Range of a Function.

Use integer data form for Reading Bar Charts 1.

Use integer, decimal data forms for Reading Line Charts 1.

Allow decimal data form for Reading Pictograms 2.

Use integer data form for Reading Tables 1,2.

Use integer, decimal data forms on Scientific Notation.

Use integer data form in Simplifying Expressions with Exponents.

Use integer data form in Solid Geometry.

Use integer, decimal data forms with Square Roots.

Use integer data form with Square Roots 2.

Use integer data forms with Scalar Matrix Multiplication.

Use integer data form on Telling Time 0.5

Test Plan: locally

Reviewers: tom, eater, stephanie

Reviewed By: eater

Differential Revision: http://phabricator.khanacademy.org/D1048
1 parent 83ab06d commit eaa5f38fe2373fc2f1a892f2bfbaef5e2f88092f cbhl committed Jan 21, 2013
Showing with 101 additions and 85 deletions.
1. +1 −1 exercises/changing_decimals_to_percents.html
2. +1 −1 exercises/converting_between_point_slope_and_slope_intercept.html
3. +1 −1 exercises/converting_between_point_slope_and_standard_form.html
4. +3 −2 exercises/domain_and_range_0.5.html
5. +4 −3 exercises/equation_of_a_circle_1.html
6. +4 −3 exercises/equation_of_a_circle_2.html
7. +5 −4 exercises/equation_of_an_ellipse.html
8. +2 −2 exercises/inscribed_angles_1.html
9. +2 −2 exercises/inscribed_angles_2.html
10. +2 −2 exercises/inscribed_angles_3.html
12. +4 −3 exercises/matrix_dimensions.html
13. +4 −3 exercises/matrix_dimensions_alternative.html
14. +1 −1 exercises/matrix_transpose.html
15. +1 −1 exercises/measuring_angles.html
16. +1 −1 exercises/multiplying_a_matrix_by_a_matrix.html
17. +1 −1 exercises/multiplying_a_matrix_by_a_matrix_solution_only.html
18. +1 −1 exercises/multiplying_a_matrix_by_a_matrix_steps_only.html
19. +1 −1 exercises/multiplying_a_matrix_by_a_matrix_video_hint.html
20. +1 −1 exercises/multiplying_a_matrix_by_a_vector.html
21. +6 −5 exercises/multiplying_and_dividing_scientific_notation.html
22. +4 −3 exercises/multiplying_complex_numbers.html
23. +1 −1 exercises/one_step_equations.html
24. +5 −5 exercises/perimeter_1.html
25. +3 −3 exercises/perimeter_of_squares_and_rectangles.html
26. +4 −3 exercises/pile_patterns.html
27. +1 −1 exercises/plugging_in_values.html
29. +1 −1 exercises/range_of_a_function.html
35. +1 −1 exercises/scalar_matrix_multiplication.html
36. +8 −2 exercises/scientific_notation.html
37. +5 −4 exercises/simplifying_expressions_with_exponents.html
38. +2 −2 exercises/solid_geometry.html
39. +1 −1 exercises/square_roots.html
40. +1 −1 exercises/square_roots_2.html
41. +1 −1 exercises/telling_time_0.5.html
42. +2 −2 exercises/translations_of_points_and_polygons.html
43. +4 −4 exercises/triangle_angles_1.html
44. +1 −1 exercises/triangle_inequality_theorem.html
45. +1 −1 exercises/vertex_of_a_parabola.html
2 exercises/changing_decimals_to_percents.html
 @@ -15,7 +15,7 @@

Express DECIMAL as a percent.

-

SOLN %

+

SOLN %

2 exercises/converting_between_point_slope_and_slope_intercept.html
 @@ -25,7 +25,7 @@

In other words, if the equation is rewritten to look like y = mx + b, what are the values of m and b?

y - y1 = m(x - x1)

-

y = \spacem\space \cdot x + \spaceb

+

y = \spacem\space \cdot x + \spaceb

2 exercises/converting_between_point_slope_and_standard_form.html
 @@ -32,7 +32,7 @@
-

y - {}{} = {}(x - {})

+

y - {}{} = {}(x - {})

[ $( '#solution_x' ).val(),$( '#solution_y' ).val(), \$( '#solution_m' ).val() ]
5 exercises/domain_and_range_0.5.html
 @@ -5,7 +5,8 @@ Domain and range of a function 0.5 @@ -75,7 +76,7 @@ circle( FUNCTION_PATH[ FUNCTION_PATH.length - 1], 0.15, { stroke: "none", fill: BLUE } ); -

DOMAIN[0]\;\le x\le\;DOMAIN[1]

+

DOMAIN[0]\;\le x\le\;DOMAIN[1]

For what values of x does f(x) have a value?

7 exercises/equation_of_a_circle_1.html
 @@ -5,7 +5,8 @@ Equation of a circle 1 @@ -31,8 +32,8 @@
-

(h, k) = (H, K)

-

r = R

+

(h, k) = (H, K)

+

r = R

7 exercises/equation_of_a_circle_2.html
 @@ -5,7 +5,8 @@ Equation of a circle 2 @@ -42,8 +43,8 @@
-

(h, k) = (H, K)

-

r = R

+

(h, k) = (H, K)

+

r = R

9 exercises/equation_of_an_ellipse.html
 @@ -5,7 +5,8 @@ Equation of an ellipse @@ -36,9 +37,9 @@
-

(h, k) = (H, K)

-

-

+

(h, k) = (H, K)

+

+

4 exercises/inscribed_angles_1.html
 @@ -41,7 +41,7 @@ graph.circle.drawMovablePoint( SUBTENDED_POINT, START + CENTRAL, START );
- CENTRAL / 2 degrees + CENTRAL / 2 degrees
@@ -85,7 +85,7 @@ "blue"
- CENTRAL degrees + CENTRAL degrees
4 exercises/inscribed_angles_2.html
 @@ -41,7 +41,7 @@ graph.circle.drawMovablePoint( SUBTENDED_POINT, START + CENTRAL, START );
- CENTRAL / 2 degrees + CENTRAL / 2 degrees
@@ -96,7 +96,7 @@ "blue"
- CENTRAL degrees + CENTRAL degrees
4 exercises/inscribed_angles_3.html
 @@ -63,7 +63,7 @@ graph.circle.drawMovablePoint( SUBTENDED_POINT, START + CENTRAL, START );
- CENTRAL / 2 degrees + CENTRAL / 2 degrees
@@ -144,7 +144,7 @@ "blue"
- CENTRAL degrees + CENTRAL degrees
 @@ -79,7 +79,7 @@
- + elem
7 exercises/matrix_dimensions.html
 @@ -5,7 +5,8 @@ Matrix dimensions @@ -35,9 +36,9 @@

- DIM_1 + DIM_1 \times - DIM_2 + DIM_2
7 exercises/matrix_dimensions_alternative.html
 @@ -5,7 +5,8 @@ Matrix dimensions @@ -35,9 +36,9 @@

- DIM_1 + DIM_1 \times - DIM_2 + DIM_2
2 exercises/matrix_transpose.html
 @@ -35,7 +35,7 @@
- + elem
2 exercises/measuring_angles.html
 @@ -34,7 +34,7 @@
- DIFF{}^{\circ} + DIFF{}^{\circ}
2 exercises/multiplying_a_matrix_by_a_matrix.html
 @@ -134,7 +134,7 @@
- + elem
2 exercises/multiplying_a_matrix_by_a_matrix_solution_only.html
 @@ -58,7 +58,7 @@
- + elem
2 exercises/multiplying_a_matrix_by_a_matrix_steps_only.html
 @@ -118,7 +118,7 @@
- + elem
2 exercises/multiplying_a_matrix_by_a_matrix_video_hint.html
 @@ -61,7 +61,7 @@
- + elem
2 exercises/multiplying_a_matrix_by_a_vector.html
 @@ -121,7 +121,7 @@
- + elem
11 exercises/multiplying_and_dividing_scientific_notation.html
 @@ -5,7 +5,8 @@ Multiplying and dividing scientific notation @@ -27,9 +28,9 @@

- scientificMantissa( 2, QUOTIENT ) + scientificMantissa( 2, QUOTIENT ) \times 10 - scientificExponent( QUOTIENT ) + scientificExponent( QUOTIENT )
@@ -74,9 +75,9 @@ (scientific( 2, QUOTIENT ))\times (scientific( 2, DENOMINATOR ))

- scientificMantissa( 3, NUMERATOR ) + scientificMantissa( 3, NUMERATOR ) \times 10 - scientificExponent( NUMERATOR ) + scientificExponent( NUMERATOR )
7 exercises/multiplying_complex_numbers.html
 @@ -5,7 +5,8 @@ Multiplying complex numbers @@ -40,11 +41,11 @@

Multiply the following complex numbers:

(A_REP) \cdot (B_REP)

2 exercises/one_step_equations.html
 @@ -21,7 +21,7 @@

Solve for X:

-

X= B - A

+

X= B - A

10 exercises/perimeter_1.html
 @@ -35,7 +35,7 @@
- 4 * S plural(UNIT_TEXT) + 4 * S plural(UNIT_TEXT)
@@ -80,7 +80,7 @@
- L * 2 + W * 2 plural(UNIT_TEXT) + L * 2 + W * 2 plural(UNIT_TEXT)
@@ -127,7 +127,7 @@
- A + B + C plural(UNIT_TEXT) + A + B + C plural(UNIT_TEXT)
@@ -183,7 +183,7 @@
- S * SIDES plural(UNIT_TEXT) + S * SIDES plural(UNIT_TEXT)
@@ -262,7 +262,7 @@
- SHAPE.perimeter + SHAPE.perimeter plural(UNIT_TEXT)
6 exercises/perimeter_of_squares_and_rectangles.html
 @@ -28,7 +28,7 @@

- 4 * S + 4 * S plural(UNIT_TEXT)
@@ -81,7 +81,7 @@

- S + S plural(UNIT_TEXT)
@@ -145,7 +145,7 @@

- 2 * L + 2 * W + 2 * L + 2 * W plural(UNIT_TEXT)
7 exercises/pile_patterns.html
 @@ -5,7 +5,8 @@ Pile patterns @@ -178,8 +179,8 @@
- In step 0, we have START blocks. At each step, we add XS more blocks.

- So, at step number S, we have
START + XS \times S blocks. + In step 0, we have START blocks. At each step, we add XS more blocks.

+ So, at step number S, we have
START + XS \times S blocks.

The number of blocks in the diagram make an arithmetic progression. This means that at each step, the same number of blocks are added. We want to find a way to know how many blocks there will be at any step.

2 exercises/plugging_in_values.html
 @@ -161,7 +161,7 @@

Find the missing values.

-

f(tableval.xval) = COEF * tableval.xval + CONS

+

f(tableval.xval) = COEF * tableval.xval + CONS

Plug the corresponding values of x into the equation to find the missing values of f(x).

 @@ -43,7 +43,7 @@

This figure is a trapezoid.

2 exercises/range_of_a_function.html
 @@ -29,7 +29,7 @@ A > 0 ? "≥" : "≤" - B + B \,\}

 @@ -43,7 +43,7 @@
- VALUES[ INDEX ] house points + VALUES[ INDEX ] house points
 @@ -45,7 +45,7 @@
- VALUES[ INDEX ] color( 1 ) plural( clothing( 1 ) ) + VALUES[ INDEX ] color( 1 ) plural( clothing( 1 ) )
 @@ -59,7 +59,7 @@

-

+

The key at the bottom of the pictograph shows that each full symbol represents plural( VALUE_PER_IMG, "badge" ).

@@ -146,7 +146,7 @@

How many more BADGE badges did person( PERSON1 + 1 ) earn than person( PERSON2 + 1 )?

-

+

The key at the bottom of the pictograph shows that each full symbol represents plural( VALUE_PER_IMG, "badge" ).

@@ -187,7 +187,7 @@

-

+

Start by counting the total number of BADGE symbols.

 @@ -75,7 +75,7 @@ rowenrollment
 @@ -73,7 +73,7 @@ rowenrollment
2 exercises/scalar_matrix_multiplication.html
 @@ -67,7 +67,7 @@
- + elem
10 exercises/scientific_notation.html
 @@ -4,6 +4,12 @@ Scientific notation +
@@ -38,9 +44,9 @@

PRETTY_DECIMAL

- BASE + BASE \times 10 - E + E
9 exercises/simplifying_expressions_with_exponents.html
 @@ -5,8 +5,9 @@ Simplifying expressions with exponents @@ -45,7 +46,7 @@

\dfrac{\color{orange}{expr( NUM )}}{\color{green}{expr( DEN )}}

-

BASE1EXP1BASE2EXP2

+

BASE1EXP1BASE2EXP2

enter a (possibly negative) integer for each exponent

@@ -86,7 +87,7 @@

\dfrac{\color{orange}{expr( NUM )}}{\color{green}{expr( DEN )}}

-

BASE1EXP1BASE2EXP2

+

BASE1EXP1BASE2EXP2

enter a (possibly negative) integer for each exponent

4 exercises/solid_geometry.html
 @@ -262,7 +262,7 @@ What is the volume of this box? Drag on the box to rotate it.

-
+
LENGTH * WIDTH * HEIGHT
@@ -297,7 +297,7 @@ Drag on the box to rotate it.

-
+
2 * LENGTH * WIDTH + 2 * LENGTH * HEIGHT + 2 * WIDTH * HEIGHT
2 exercises/square_roots.html
 @@ -62,7 +62,7 @@

\Large{\sqrt{Q} = \text{?}}

-

N

+

N

2 exercises/square_roots_2.html
 @@ -31,7 +31,7 @@

N

-

N < \sqrt{Q} < N + 1

+

N < \sqrt{Q} < N + 1

two integers, like 6
2 exercises/telling_time_0.5.html
 @@ -34,7 +34,7 @@
-

The time is:
HOUR : NICE_MINUTE AM_PM

+

The time is:
HOUR : NICE_MINUTE AM_PM

a 12-hour time in hours and minutes

4 exercises/translations_of_points_and_polygons.html
 @@ -253,9 +253,9 @@
{\LARGE T } \;( - DX + DX , - DY + DY )
8 exercises/triangle_angles_1.html
 @@ -63,7 +63,7 @@ -

X =TRIANGLE[ 0 ][ 2 ]

+

X =TRIANGLE[ 0 ][ 2 ]

Angles in a triangle add up to 180 degrees.

We know two angles of the triangle.

@@ -87,7 +87,7 @@ tr.drawLabels();
-

X =TRIANGLE[ 0 ][ 2 ]

+

X =TRIANGLE[ 0 ][ 2 ]

Angles in a triangle add up to 180 degrees.

@@ -117,7 +117,7 @@ tr.drawLabels();
-

X =TRIANGLE[ 0 ][ 0 ]

+

X =TRIANGLE[ 0 ][ 0 ]

Angles in a triangle add up to 180 degrees.

@@ -149,7 +149,7 @@ tr.drawLabels();
-

X =TRIANGLE[ 0 ][ 0 ]

+

X =TRIANGLE[ 0 ][ 0 ]

Angles in a triangle add up to 180 degrees.

Because this triangle has two sides equal, it also has two angles equal (it is an isosceles triangle).

2 exercises/triangle_inequality_theorem.html
 @@ -54,7 +54,7 @@
-

MIN < x < MAX

+

MIN < x < MAX

two exact decimals, like 0.75
2 exercises/vertex_of_a_parabola.html
 @@ -54,7 +54,7 @@

Find the parabola's vertex.

-

\large{\left(\right.}H,\text{ }K\large{\left.\right)}

+

\large{\left(\right.}H,\text{ }K\large{\left.\right)}

a point, like (-1, 2)