few_shots: 
Example:
Concept/skill: 
Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.

Problem/activity:
Problem 1
The table below contains single equations in a single variable, single equations in two variables, and pairs of simultaneous equations in two variables. Check the appropriate box to show whether there is no solution, exactly 1 solution, or if there is an infinite number of solutions.
{"table": [{"_attributes": {"align": "center", "class": ["table", "table-bordered"], "style": "table-layout:fixed; width:70%"}, "tbody": [{"tr": [{"td": [{"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}, "strong": [{"_value": "No solution"}]}, {"_attributes": {"style": "text-align:center"}, "strong": [{"_value": "Exactly 1 solution"}]}, {"_attributes": {"style": "text-align:center"}, "strong": [{"_value": "Infinite number of solutions"}]}]}, {"td": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${9=4x+7}$$"}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${y=3y+5}$$"}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${y={x\\over2}}$$"}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"p": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${3x+6y-9=0}$$"}]}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"p": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${x=y}$$"}]}, {"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${1.25x=1.25y}$$"}]}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"p": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${9.9=6x+8y}$$"}]}, {"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${9x=2.5y-8.8}$$"}]}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}]}, {"td": [{"p": [{"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${11x-2y=1.5}$$"}]}, {"_attributes": {"style": "text-align:center"}, "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${11x-2y=2.5}$$"}]}]}, {"_attributes": {"style": "text-align:center"}}, {"_attributes": {"style": "text-align:center"}}, {}]}]}]}]}
Problem 2
Kim has a small container and a large container as shown.
[IMG]
It takes 16 of the small containers to fill the large container. Three small containers leave 1.95 gallons of space in the big container.
What is the size of each of the two containers?


Answer: 
No. Completing neither of these problems requires replacing one equation by the sum of that equation and a multiple of the other equation.

Now, assess whether the following problem or activity is 'aligned' with the given Common Core standard in Mathematics.

shot_info: fl_problem_001392_neg_0

8
standard_description: Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.
problem_activity: Problem 1
Bisect the following angle using constructions. Write your steps for construction.
$${\overline{CA}\cong \overline{AB}}$$
[IMG]
Problem 2
You and your partner will be provided with a list of steps (in random order) needed to copy an angle using a compass and straightedge. Your task is to place the steps in the correct order, then follow the steps to copy the angle below.
[IMG]
{"table": [{"_attributes": {"class": ["table", "table-bordered"], "style": "width:50%"}, "tbody": [{"tr": [{"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$B$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$B$$"}], "_values": ["Draw circle", ": center", ", any radius."]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$B$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$A$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$C$$"}], "_values": ["Label the intersections of circle", "with the sides of the angle as", "and"], "em": [{"_value": "."}]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$B$$"}], "_values": ["Label the vertex of the original angle as", "."]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${\\overrightarrow{ED}}$$"}], "_values": ["Draw", "."]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${\\overrightarrow{EG}}$$"}], "_values": ["Draw", "as one side of the angle to be drawn."]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$F$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$F$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$FA$$"}], "_values": ["Draw circle", ": center", ", radius", "."]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$E$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$E$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$EA$$"}], "_values": ["Draw circle", ": center", ", radius", "."]}]}, {"td": [{"em": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$E$$"}]}], "_values": ["Label intersection of circle", "with", "as", "."], "span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$${\\overrightarrow{EG}}$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$F$$"}]}]}, {"td": [{"span": [{"_attributes": {"class": ["math-tex"]}, "_value": "$$E$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$F$$"}, {"_attributes": {"class": ["math-tex"]}, "_value": "$$D$$"}], "_values": ["Label either intersection of circle", "and circle", "as", "."]}]}]}]}]}


aligns: no