Geometry

/Geometry

Increasing Engagement

I remember being frustrated last year at about this time with my geometry students' performance on four questions on their circles test. The test was chronologically ordered in the way the material was presented so I was perplexed when they did poorly on the last section before review. It involved circles in the coordinate plane. Below are [...]

By |April 26th, 2017|Geometry|0 Comments

Sine, Cosine, and Tangent Ratios

Spring break brought out the creative juices. I spent time reworking guided notes sheets from last year into doodle notes this year. I like how they turned out. The Tangent Ratio Sine and Cosine Ratios I love it when I can start the class with a real world problem and help them arrive at a [...]

By |March 26th, 2017|Algebra II, Geometry|0 Comments

Similar Polygon Exploration in Geogebra

Use Geogebra to create similar polygons, compare the scale factor of a dilation with the side lengths of the image and preimage compare the scale factor with the ratio of the perimeters compare the scale factor with the ratio of the areas https://youtu.be/S2orPH6CqLk A written version of the investigation is below. Similar Polygon Exploration To see [...]

By |January 4th, 2017|Geometry|0 Comments

Crack the Code

As a review for the semester 1 final, I created a review centered around deciphering clues. My students are not always good about doing work accurately. Some want to just write down an answer to finish. This several day long activity is designed to promote accuracy. There are several parts.           [...]

By |December 7th, 2016|Geometry|0 Comments

Transformations Unit

Translations As an informal assessment, I gave my students a Halloween Transformations worksheet to a) keep them off their phones after they finished their chapter tests and b) see how much they remember about or can do regarding transformations with minimal instruction. Most completed the assignment with no issues. Translations Doodle Notes can help students [...]

By |October 28th, 2016|Geometry|0 Comments

The Challenges of Using Technology

One of my unspoken goals for this year has been to include more explorations in my Geometry classes - specifically Geogebra explorations. This has posed some challenges. The iPad cart I have been checking out has 20 devices and I have had up to 30 students in my classes. Compensation: pair students up. It makes [...]

By |October 16th, 2016|edtech, Geometry|0 Comments

Parallel and Perpendicular Lines

Types of Lines While parallel and perpendicular lines will be the primary focus of this chapter, there are other types of lines. Use the Types of Lines Foldable to distinguish between them. Types of Angles When two lines are cut by a transversal, there are special names for the angles formed by the transversal and the lines. [...]

By |October 5th, 2016|Geometry|0 Comments

Reasoning and Proofs

Conditional Statements My goal for this unit is to help students see the goal of becoming more logical, methodical, and developing their pre-frontal cortex. After the chapter 1 test, I gave them a copy of Who Owns the Zebra? While a few flew through it, some didn't know where to begin. If I have time, [...]

By |September 11th, 2016|Geometry|0 Comments

Midpoint

One frustration I encountered last year in my geometry classes involved the Distance and Midpoint formulas. Our text book and I made the assumption that since my students had worked with these formulas, they would remember them and could use them. We encountered problems throughout the book that required the use of both formulas and I [...]

By |July 26th, 2016|Geometry|0 Comments