ScreenChomp, Explain Everything, Showbie, and Educreations
are examples of some of the Apps my colleagues are using in math class to have
students explain their math thinking. When a student records his or her
explanation of how he or she solved a problem using one of these Apps (or on
paper), that student reveals all sorts of evidence of their learning. The
beauty of these Apps is that they include the student’s voice overlapping with
what they have written and/ or drawn. From our experience, it seems the
students are more likely to go over and revise their recordings and written
work, which was more like “pulling teeth” when just paper, was involved. For
many of them, each time they re-record, they clarify their thinking and hone
their ability to articulate mathematical ideas.
Can we scaffold this process to ensure the students can
become even more facile in communicating their math thinking? I think the
answer to that is yes. We can give the students check lists and rubrics to
guide their work. Not only can we
provide rubrics, so they know the components to focus on, we can set up
partnerships wherein they can peer conference with one another and
collaboratively strengthen their understanding and ability to communicate that
understanding.
There are many sources for rubrics online and we can create
our own. The best thing about choosing
and developing these assessment tools is that it forces us to think deeply
about our teaching. The standards-based Exemplars rubric prompts us to look at the
students’ work in five ways:
Problem-Solving and/or basic Understanding, Reasoning and Proof,
Communication, Representation, and Connections. To help students assess their understanding of
a problem, as teachers we can ask them (or their peers can ask them): What do
you know and what are you trying to find out? What strategies are you going to
try and why? What tools do you need?
Could there be more than one solution? Could you solve this problem two
different ways? To help students explain their reasoning and proof, we can ask
them (or their peers can ask them): Does that make sense? Why is that true? Is
that true for all cases? Could you prove it? Can you think of a counter
example? To help students communicate
clearly, we often remind them to use their mathematical vocabulary and to
describe their thinking with words, numbers (equations), and pictures,
diagrams, models or graphs. We often have to prompt them to create a diagram,
make a table, use a number line, put things in order, or act a problem
out. In order to encourage students to
make connections, we need to give them time to be reflective. We can ask (and
they can ask one another): Does this remind you of other problems we have
solved? How does it relate to ………..? Why
does your answer seem reasonable? Do you see a pattern? Can you explain it?
In making check lists and rubrics to scaffold our students’ efforts
to explain their mathematical thinking, we ourselves can think about how much
time we spend developing mathematical thinking with effective questioning in
our classrooms. When we are asking good questions, we are modeling thinking
strategies. As we are making our thinking visible, we are highlighting the ways
our students think and explain their thinking. We also can use models, diagrams,
drawings, graphs, and equations to show how we are thinking and how we imagine
our students are thinking. We need to listen carefully to honor our students’
thinking authentically. Elementary
school age students need daily exposure to representations of mathematical
ideas before they can create these independently.
One of the best results of the iPad program in 4th
grade at our school has been its inherent student-centeredness. The students
now have the ability to communicate their mathematical thinking both orally and
by drawing and writing as well as the ability to easily revise and refine their
work. They feel empowered when they use these Apps
to explain their mathematical thinking.
Let it remind us again as teachers to continually reflect on
our teaching when we look and listen to that student’s work for evidence of
learning. Teaching ≠ learning: in other
words, just because we “taught it” does not mean the students “learned”
it. Assessments can reflect many nuances
in student understanding and inspire many forms and variations of
differentiated, intentional instruction.