Benzel
Investigative Geometry
Proof Poster
(DUE Monday for 15 practice points)
The Purpose: In the interest of getting comfortable with the process of creating your
proofs, I want you to create a poster that features and Algebraic proof and a Geometric
proof. You will also be including some of the steps to creating proofs on the purple
sheet
Your Task: You will create a poster that does the following:
 Chooses an Algebraic equation (i.e. a multi-step equation) and creates either a
statement reason or flow chart proof.
 Chooses a Geometric proof (i.e. from the notes or the homework)- You may
choose an angle proof or a segment proof. If you want to, you could even do a
complementary angle or supplementary angle problem and make it into a proof.
 Uses tips and advice from the pink sheet.
Places to Go:
 Your notes
 Knowledge of algebra
 The pink sheet!
PROOF POSTER RUBRIC
Beginning
Approaching
Mastered (4)
(0-2)
(3)
Algebraic Proof - Algebraic
- There are
- An Algebraic
multi-step
minor errors in equation is
equation does
the steps of
chosen.
not have
solving the
- Steps are
proper steps.
multi-step
provided and
equations OR
are usually
some reasons
justified with
that are
proper reasons
missing.
- The problem
is solved in a
statementreason format
or flow chart
format.
Geometric
- Geometric
- Geometric
- Geometric
Proof
proof is not
proof is chosen, proof is chosen
chosen or has
however a
from notes and
numerous
picture is not
the picture is
major errors.
provided.
represented.
- There are
Statements and
some
reasons are
inaccuracies
provided but
Usage of Tips
- There are
little to no tips
provided in
creating the
two proofs.
- A few tips are
provided on
how to
complete the
proofs.
- There is a
section of tips
that are about
proofs in
general but
they may not
be directly
related to the
specific proofs
chosen.
Advanced (5)
- A statement
reason or flow
chart proof is
created with all
steps provided
and fully
justified with
the proper
reasons and
properties.
- Student
challenges
themselves by
creating their
own Geometric
proof:
OR
- Proof is well
organized with
correct
statements and
reasons.
- Student uses
the tips and
directly uses
them through
things like
thought clouds
or instructions
on specific
proofs to aid in
the explanation
and solution of
their proofs.
SCORE _____/15