Recent Updates

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2017

Thursday, March 23rd, 2017:
We have a new lesson, called The Inverse of a Matrix.

Monday, March 20th, 2017:
We have a new video, called The Multiplicative Inverse of a Matrix.

Saturday, March 18th, 2017:
We have a new quiz, called Law of Sines: Ambiguous Case (SSA).

Thursday, March 16th, 2017:
We have a new quiz, called The Unit Circle: Angles.

Tuesday, March 14th, 2017:
We have a new quiz, called The Unit Circle: Ratios.

Saturday, March 11th, 2017:
We have a new quiz, called Vectors: Horizontal and Vertical Components.

Thursday, March 9th, 2017:
We have a new quiz, called Counting: Town Maps and Grids Problems.

Tuesday, March 7th, 2017:
We have a new quiz, called Counting: Scrambled Letters Problems.

Monday, March 6th, 2017:
We have a new quiz, called Counting: Bookshelf Problems.

Wednesday, March 1st, 2017:
We have a new quiz, called Counting: Seating People Problems.

Tuesday, February 28th, 2017:
We have a new lesson, called Solving Trigonometric Equations. It houses two very important videos that we made last year.

Also, our lesson on Factoring Polynomials (formerly called Factoring Quadratic Trinomials) was overhauled.

Sunday, February 26th, 2017:
We have a new video, called Counting: Card Deck Problems.

Saturday, February 25th, 2017:
We have a new video, called Probability: Marble Bag Problems.

Tuesday, February 21st, 2017:
We have a new video, called Probability of Rolling Dice.

Saturday, February 18th, 2017:
We have a new video, called Law of Sines: Ambiguous Case (SSA).

Wednesday, February 15th, 2017:
We have a new video, called Counting: Election Problems.

Monday, February 13th, 2017:
We have a new video, called Counting: Number of Possible Paths on a Grid (Map).

Saturday, February 11th, 2017:
We have a new video, called Counting: Books on a Shelf Problems.

Thursday, February 9th, 2017:
We have a new video, called Counting: Seating People Problems.

Tuesday, February 7th, 2017:
We have a new video, called Counting: Scrambled Letters, Numbers, Objects.

Monday, February 6th, 2017:
We have a new video, called Verifying Trigonometric Identities.

Saturday, February 4th, 2017:
We have a new video, called Counting: Horse Problems.

Thursday, February 2nd, 2017:
We have a new video, called Counting: Tickets Problems.

Tueday, January 31st, 2017:
We have a new video, called The Fundamental Counting Principle: License Plate Problems.

Monday, January 30th, 2017:
We have a new video, called The Fundamental Counting Principle: Clothes Problems.

Saturday, January 28th, 2017:
All of our trigonometry lessons, quizzes, and videos have been lumped together within their own section on our Lessons page.

Sunday, January 15th, 2017:
A quiz called Graphs of Sinusoids to Equations was remastered.

Friday, January 13th, 2017:
A quiz called Three Step Equations: Type 2 was remastered.

Wednesday, January 11th, 2017:
The quiz called Three Step Equations: Type 1 was remastered.

Also, adjustments were made to the lessons page. A link was missing to a quiz, called Area of a Regular Polygon.