# Q4, W3: April 13-17 Pre-Algebra

Teacher Kristin Andreason Pre-Algebra 8 April 13-17 Focus 11: Statistics
Standard(s) Taught

#### MAFS.8.SP.1.1:  Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association.

MAFS.8.SP.1.2: Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.

MAFS.8.SP.1.3: Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept.
Learning Targets and Learning Criteria
• construct a scatter plot by plotting ordered pairs on a coordinate grid representing the relationship between two data sets.
• describe patterns in the plotted points such as clustering, outliers, positive or negative association, and linear or non-linear association and describe the pattern in the context of the measurement data.
• explain the patterns of association of scatter plots of bivariate data in the context of the data sample.
• construct straight trend lines to approximate the linear relationship between the plotted points of two data sets.
• justify the reliability of the trend line by noting the closeness of the data points to the line.
• understand that the trend line does not have to be proportional.
• determine the equation of the trend line that approximates the linear relationship between the plotted points of two data sets.
• interpret the y-intercept and slope of the equation in the context of the collected data.
• use the equation of the trend line to summarize the given data and make predictions regarding
Classroom Activities

There are no Zoom meetings this week.  Please use the teaching resources in the lesson plans for instruction–the Khan Academy and Learnzillion are the teaching resources (do not skip these!).

Monday:

• Review the 2-page handout in your ISN (p. 28) on Slope-Intercept Form (this will help you as you work on equations of lines of best fit) (10 minutes)
• Watch the following two lessons on LearnZillion and write notes in your ISN on a new page titled “Line of Best Fit”:  (30 minutes)
• https://learnzillion.com/lesson_plans/6659-interpret-slope-using-line-of-best-fit/
• https://learnzillion.com/lesson_plans/5502-interpret-intercepts-using-line-of-best-fit
• Do IXL Z.10 Interpret the Graph of a Linear Function

Tuesday:

• Go to Khan Academy and do the assignment “Equations of Trend Lines:  Phone Data”  (20 minutes)
• Do the assigned Quizizz on “Trend Lines” (if you did not sign up for your class on Quizizz, go to joinmyquiz.com and enter code 771352) (20 minutes)

Wednesday:

• Do the assigned iReady lesson Problem Solving with Linear Models (you must do the quiz!) (60 minutes)

Thursday:

• Watch the following two lessons from LearnZillion and take notes in your ISN on a new page titled “Outliers and Clusters in Scatter Plots” (30 minutes)
• https://learnzillion.com/lesson_plans/6394-interpret-a-scatter-plot-by-identifying-clusters-and-outliers/
• Do IXL DD.8 Outliers in Scatter Plots (30 minutes)

Friday:

• Go to Khan Academy and do the assigned activities “Outliers in Scatter Plots” and “Clusters in Scatter Plots” (30 minutes)
• Do pages 252-253 in Ready Math workbook (30 minutes)
Assignments Due
• IXL’s Z.10 and DD.8