In class this week students have been working on their statistics project. The project asks them to analyze a question in statistics — either a question which I created from a data set of student height and gender in CPMS advisory classes or a question of their choosing with data they find or generate. Here is the project task sheets and rubric.
Statistics project is due on Tuesday.
Thursday, 8 June 2017
Note: The formula for standard deviation involves (Greek, "Sigma") or "sum" notation. refers to the ith element in the data set, is the mean x-value.
- Find the difference between each value and the mean
- Square those differences
- Find the sum of all of the squares
- Divide that value by N (the number of data elements in the set)
- The Standard Deviation is the square root of the result
One way to understand the standard deviation is that it is kind of like the average distance from the mean in the data set.
Wednesday, 7 June 2017
The class has run out of facial tissue but there are still plenty of sniffles. So, if you would like to donate some facial tissue to the class that would be much appreciated and put to good use, keeping kids in class instead of heading to the restroom. Thank you thank you thank you!
Thursday, 25 May 2017
* The distance formula (section 8.1)
* Using coordinates to prove that segments are congruent, parallel or perpendicular (8.2)
* Using congruence, perpendicularity and parallel properties to justify conjectures about shapes. (8.3)
* Writing and analyzing vertical shifts in linear or exponential functions (these have the form f(x) = g(x) + k).
Friday — 8.4 Task + Go (in class) completed on whiteboards, not necessarily in notebook.
Monday — 8.5 Task + RSG
Tuesday — 8.6 Task (Part 1/2/3 all) + 8.6 Set
Today’s assignment: Algebra & Geometry Review worksheet
Thursday, 18 May 2017
Wednesday, 17 May 2017
These problems deal with proving congruence, perpendicularity, and parallelism using coordinate relationships. So for example, showing that the shape below is a rectangle by demonstrating that the slope of each pair of adjacent sides is perpendicular. We demonstrate perpendicularity by computing the slopes of the lines say slope(BC) = -(2/6) = -1/3 and the slope(AB) = 3/1 = 3. Since -1/3 and 3 are negative reciprocals we can see that sides AB and BC are perpendicular, and thus the angle at B is a right angle.
Tuesday, 16 May 2017
Assignment: 8.2 Task + RSG
Monday, 15 May 2017
They should understand how and why the formula works. And also see the relationship between the distance formula and the pythagorean theorem which it is based on
a triangle is right if and only if (its sides a, b and c) satisfy
Assignment: 8.1 Task + RSG
Tuesday, 9 May 2017
Monday, 8 May 2017
Assignment: in order to be on track to finish by Friday, tonight students should complete all of problems 1 and 2 (there are 3 parts of #1). These problems require students to explain their thinking, use geometric vocabulary, label diagrams with appropriate congruence and measurement marks, and be precise.