Learning Domain: Functions
Standard: Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. For example, the function A = s^2 giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line.
Degree of Alignment:
Not Rated
(0 users)
Cluster: Define, evaluate, and compare functions
Standard: Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. For example, the function A = s^2 giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line.
Degree of Alignment:
2 Strong
(3 users)
on Mar 13, 01:53pm Evaluation
CCSS.Math.Content.8.F.A.3: Strong (2)
I think the interactive model offers a good exploration of how the slope and y-intercept affect properties of the line. Does not really give examples of non-linear lines unless students explored the linked options.
on Mar 13, 01:53pm Evaluation
Quality of Explanation of the Subject Matter: Limited (1)
I appreciate how the OER gives a sample of things to try with some explanations, but these explanations are limited and could have more detail (such as encouraging exploration of how changes in the slope 'a' affect the line).
on Mar 13, 01:53pm Evaluation
Utility of Materials Designed to Support Teaching: Limited (1)
Lesson requires additional instructional supports both in content and directions.
on Mar 13, 01:53pm Evaluation
Quality of Assessments: Limited (1)
Assessment would have to be teacher-directed or student-reported in some way. No assessment is embedded.
on Mar 13, 01:53pm Evaluation
Quality of Technological Interactivity: Superior (3)
A highly interactive technology component. One can explore both slope and y-intercept individually or together. And you can set ranges for the exploration.
on Mar 13, 01:53pm Evaluation
Quality of Instructional and Practice Exercises: Strong (2)
OER offers a strong exploration of two variables of linear functions. Other supporting materials before and after are likely necessary.
on Mar 13, 01:53pm Evaluation
Opportunities for Deeper Learning: Strong (2)
The object does provide a clear way to deepen knowledge and, with supports, determine how well learners understand the basic concepts.