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www.mathletics.comRubric
Level 1
Level 2
Level 3
Level 4
The student cannot
solve the problem
without help.
The student does not
convincingly explain why
his or her solution is
correct or not.
The student determines
one way that 8 coins
could be worth less
than 7 coins, but the
difference between the
two values is too great.
The student may or
may not correctly
explain why the solution
is correct.
The student does
not address why,
theoretically, fewer coins
can be worth more.
The student determines
one way that 8 coins
could be worth slightly
less than 7 coins.
The student can explain
how he/she knows the
solution is correct.
The student does not
clearly explain why fewer
coins can, theoretically,
be worth more, not just
in this one case.
The student determines
at least two ways that
8 coins could be worth
slightly less than 7
coins.
The student clearly
explains why fewer coins
can, theoretically, be
worth more, not just in
this one case.
Coins
Number




