Checking student answer as a coordinate point

Questions
1

Hello, I am new to computation layer.
I understand how to get it to check a student numerical input, but how can I get it to check a student numerical point?
I am trying to use it for the solution to a system of equation.

2

Could you provide a link to your activity or copy the code?

3

correct: this.numericValue= (-4,1)
correct: correct

I have a feeling it’s because of the coordinate not being a “numeric” value, so what option should I use?

4

I figured it out. I ended up using a table to check their coordinate point.
However, when I change the table format to “math input,” it does not show students whether they are correct or not. (I left it as a text)

Here is the code on the table:
correct: table1.cellContent(1,1)=“(-4,1)”

cellContent(1,2):when table1.cellContent(1,1)=“(-4,1)”
“:white_check_mark:”
otherwise " "

5

For coordinate pairs, you need to use parseOrderedPair - for example, something like

correct: parseOrderedPair(this.latex).x=-4 and parseOrderedPair(this.latex).y=1

should do the trick. You could also have something like coord=parseOrderedPair(this.latex) and then just use coord.x=-4 and coord.y=1

6

@pirsquared @tarnold
Can you check this code for inp4?
I am also expecting a coordinate as their answer, and on the teacher dashboard it is marking it correct, but the feedback is not giving them as a correct answer.

7

@pirsquared @tarnold actually, any point they enter is being marked correctly.

8 
coord=parseOrderedPair(this.latex)

correct: numericValue(coord.x)=3 and numericValue(coord.y)=8
1 Like
9

I keep getting an error message saying "Component “undefined: had no source “latex”. It actually doesn’t have any sources at all. Sorry about that.”

10

Where are you getting this error message? Can you share your updated activity?

11
12

I have it in the last “note box” but can you check inp4? Maybe I’m missing something

13

Put this in your note box:

coord=parseOrderedPair(inp4.latex) 
correct = numericValue(coord.x)=3 and numericValue(coord.y)=8

content:"${feedback}"

feedback= when inp4.submitted and correct "✅ Good work!" when inp4.submitted "🤔 Keep thinking" otherwise " "

You can also have

coord=parseOrderedPair(inp4.latex) 
correct: numericValue(coord.x)=3 and numericValue(coord.y)=8

in inp4, if you want the dashboard checks to work as well.

14

THANK YOU SO MUCH!
It’s working :slight_smile: