Bailey

Online Common Core Resources
[|High School Support Tools] This is a website that has a few PDFs that include FAQs, sequencing, etc. They have PDFs for the different subjects

[|Public School of NC Wiki Space]. Answers a lot of FAQs.

[|Smarter Balance Consortium] Has a bunch of interesting PDFs that help explain how the changes will happen.

[|Common Core by States] This lets you click on which state you want to learn about and how they are being effected by the common core.

[|Resources] This is a website that has collected resources in one location.

[|Video] This is a clip of a classroom using the Common Core.

[|Common Core] Here is Common Core's website.

[|NHCS Common Core] Here is an article about what New Hanover County is doing about Common Core.

[|Edutopia] Another website full of resources.

[|Video 2] Take a look!

**LEADERSHIP PROJECT**

 * Subject**: Pre-Calculus
 * Topic**: Sum and Difference Formulas for Sine and Cosine
 * Grade Level:** 10-12
 * Summary:** Students will discover the sine and cosine sum and difference formulas, and then will complete some problems using the formulas.
 * Objective:** Students will discover the sine and cosine sum and difference formulas, and will be able to use the formulas to find the values of different angles on and off the unit circle.

Students will complete a warm up involving material from the previous days material. The students will communicate with each other if problems arise. During the warm up the teacher will be able to walk around and be able determine the students understanding of the material from the warm up. The class will them go over the warm up as a group addressing questions and concerns as they arise.
 * Based off a 90 min class**:
 * Before**: (20 minutes)

(20 minutes) The teacher will pass out the worksheet and explain the directions. The teacher will then let the students work in pairs or small groups of 3 to see if they can discover the sum and difference formulas. When the students ask questions the teacher will answer with questions, this will push the students to think independently about the mathematics involved. Letting the students work in groups will let them learn how they do best. If they like trial and error they have the chance to do that, if they like to talk it out with their peers they have the chance to do that, etc. (30 minutes) The class will come back together and discuss what the students discovered. The teacher will make a running list of the difference formulas the students come up with. Then the teacher will put a couple example on the board, cos(75 degrees), and sin(75 degrees). The students will use the list of formulas to determine which are the correct formulas. Then the teacher will ask them to find cos & sin of 15 degrees. The students will use their Unit Circles to find the values they need to make 75 and 15 degrees. Then the class will come back together and will decide the correct formulas. The teacher will give an exit slip with a variety of problems for the students to practice their new formulas on.
 * During**: (50 minutes)
 * After:** (20 minutes)


 * Assessment:** The teacher would use the exit slip as a formative assessment and use those exit slips to know what to focus on tomorrow.

Mathematical Practices: 1. Make sense of problems and persevere in solving them. 2. Construct viable arguments and critique the reasoning of others. 6. Attend to precision. 8. Look for an express regularity in repeated reasoning. F-TF: Trigonometric Functions Extend the domain of trigonometric functions using the unit circle. (+) Use special triangles to determine geometrically the values of sine, cosine, tangent for π/3, π/4 and π/6, and use the unit circle to express the values of sine, cosine, and tangent for π–x, π+x, and 2π–x in terms of their values for x, where x is any real number.
 * Alignment with Common Core:**