1. Math, Grade 8, Common Core State Standards, Statistics & Probability 3
   1. Rebecca Petersen
2. OBJECTIVES
   1. 1. Display bivariate data on a scatterplot.
   2. 2. Produce the slope and y-intercept of a line.
   3. 3. Fit a line to data and write an equation for it.
   4. 4. Use slope, y-intercept, interpolation and extrapolation to solve real life problems.
   5. 5. Distinguish when it is appropriate to use linear extrapolation in a bivariate scatterplot and when the situation would not have accurate results using that method.
3. BIG IDEAS
   1. Straight lines are often used to model bivariate relationships.
   2. Linear models can help to solve real-life problems.
4. Scaffolding
   1. Obj 1. Show and Tell -Think Alouds
   2. Obj. 2 interactive Graph
   3. Obj. 3 Cue Card
   4. Obj. 4 Think, Pair, Share
   5. Obj. 5 Tap into prior knowledge
5. Key Factors
   1. Obj. 1. A scatterplot is a visual graph interpretation of bivariate data, which lends to a visual presentation. Since this is the beginning of a new unit, most students will not have much prior knowledge of the subject.
   2. Obj. 2 It can be tricky to find the slope and y-intercept. Using an online manipulative graph can help all levels of readiness. The lower levels can explore and make mistakes, while the students that already know the information can explore further ideas through the computer program.
   3. Obj. 3 Presenting the students with a cue card that has the bare equation on it, would give them a template to follow when they start producing their own equations.
   4. Obj. 4 Students now know what a slope, y-intercept, interpolation and extrapolation are, so they are ready to apply it to the real world. Through the think, pair, share, the whole class uses critical thinking skills to come up with ways to do apply the material.
   5. Obj. 5 The students have just finished learning about interpolation and extrapolation, so they can tap into that can tap into that knowledge to find out when it is appropriate or inappropriate to use.