**Sunday, June 30th, 2019**:
We have a new quiz, called

Sum of First N Multiples of M. We also adapted it for a slightly different set of circumstances:

Sum of First N Multiples of M #2.

**Thursday, June 27th, 2019**:

We have a new video, called Interpreting RREF Augmented Matrices.

**Tuesday, June 25th, 2019**:

We have a new video, called Advanced Mixture Problems.

**Monday, June 24th, 2019**:

We have a new video, called Solving Absolute Value Equations.

**Thursday, June 20th, 2019**:

We have a new video, called Converting Between Degrees and Radians. The video demonstrates the process using conversion factors (ratios).

**Wednesday, June 19th, 2019**:

We have a new video, called Reference Angles. It demonstrates how to calculate the reference angle of a standard trigonometric angle.

**Saturday, June 15th, 2019**:

We have a new video, called How to Apply MATHguide for Effective Teaching & Learning. This video informs teachers of specific strategies.

There is also an accompanying PDF (PowerPoint) by the same name here.

**Friday, June 14th, 2019**:

We have a new video, called How to Use MATHguide in the Classroom. This video informs the teachers how to get site information to students and how to build lessons, assess students, provide students with feedback, and develop review content for students using MATHguide services.

There is also an accompanying PDF (PowerPoint) by the same name here.

**Thursday, June 13th, 2019**:

We have a new video, called The Educational Importance of MATHguide. This video informs the viewer of MATHguide's focus: student engagement, rigor, providing scaffolds, assessment, feedback, and enrichment.

There is also an accompanying PDF (PowerPoint) by the same name here.

**Tuesday, May 28th, 2019**:

We have a new activity, called Math Art Project. This activity is actually a project that addresses several skills/concepts, like domain and range, parent functions, and using sliders to create motion.

**Saturday, May 25th, 2019**:

We have a new activity, called Volume of an Open Box (Dynamic). To help students through this activity (*flipped classroom*), this video was created: Volume of an Open Box (Dynamic).

**Sunday, May 5th, 2019**:

We have a new quiz, called Limits: Numerical Approach.

**Monday, April 29th, 2019**:

We have two new activities, called...

**Tuesday, April 23rd, 2019**:

We have two new quizzes, called...

These quizzes are all closely related.

**Tuesday, April 23rd, 2019**:

We have a new quiz, called Parametric Equations 1.

**Tuesday, April 16th, 2019**:

We have a new quiz, called Logarithms: Contraction.

**Sunday, April 14th, 2019**:

We updated our game, called Picture Math. A new level was added to the game: very hard. Now, this problem will challenge advanced, upper level high school students and college students.

**Thursday, April 11th, 2019**:

We have three new quizmasters, called:

**Wednesday, April 10th, 2019**:

We have a new quizmaster, called Multiplying Matrices.

**Tuesday, April 9th, 2019**:

We have a new lesson, called Angle Between Two Vectors.

**Sunday, April 7th, 2019**:

Several quizzes -- again, too many to mention -- were given a facelift.

**Saturday, April 6th, 2019**:

We remastered a quiz, called Dividing Fractions. This quiz provides more detailed feedback.

Also, several quizzes -- too many to mention -- were adjusted for cosmetic issues.

**Friday, April 5th, 2019**:

We have a new quizmaster within our series on vectors, called The Angle Between Two Vectors
.

**Thursday, April 4th, 2019**:

We remastered an older quizmaster, called Binomial Theorem: Expansion
. It now operates the same no matter the browser. This quizmaster was remastered last because there was a vexing technical hurdle to overcome. Finally, it is done!

**Thursday, February 28th, 2019**:

We have a new activity, called Confidence Intervals by Formula: MATHguide
. This helps students how to use a confidence interval formula by using a video. It addressed Common Core State Standard HSS-IC.B.4.

**Tuesday, February 26th, 2019**:

We have a new video, called Geometric Sequences
. This video helps students follow guided notes in a lesson that targets identifying and working with geometric sequences. The guided notes are available as this activity: Geometric Sequences: Guided Notes. This activity addresses two Common Core State Standards: HSF.BF.A.1.A and HSF.BF.A.2.

**Saturday, February 23rd, 2019**:

We have a new activity, called Proving the Pythagorean Theorem #2
. This method was invented (discovered?) by President Garfield in 1876.

**Thursday, February 21st, 2019**:

We have a new lesson, called Solving Trigonometric Equations by Method of Graphing
. This is an add on to an existing lesson, but it completes a trifecta of methods.

**Saturday, February 2nd, 2019**:

We have a new activity, called Tide Problem, which relates to this Common Core State Standard: CCSS.MATH.CONTENT.HSF.TF.B.5
.

**Wednesday, January 30th, 2019**:

We have a new activity. This activity is a self-guided, asynchronous lesson on chemistry mixture problems. It involves watching a video, answering in-depth questions (higher order thinking), using a TI-Nspire graphing calculator, and utilizing a MATHguide quizmaster.

The activity starts with this video, called Chemistry Video Activity. This written activity follows:
Chemistry Video Activity, which relates to this Common Core State Standard: CCSS.MATH.CONTENT.HSA.REI.C.6
.