We've been doing something in geometry these days that reminds me a bit of subitizing. I learned about it in a math professional development class from Boise State University. It's called Quick Images. You show a composite shape to the kiddos for a few seconds, then remove the picture to see what they can create from memory. It is definitely a challenge, but it stretches their knowledge of shapes, their attributes, and the space the shapes occupy. The composite shapes increase in difficulty like you see below.
from color
to black and white
to only the outline
We did two or three of each type before moving on to the next one. Oh, and we always talked about what they noticed as well.
I do not have permission to share the slides of the shapes from BSU, but I'm sure you could make your own if you think this activity would benefit your students.
Great use of subitizing!!
ReplyDeleteTara
The Math Maniac
Tara, I thought so too.
DeleteI have heard of a similar activity with words. You show the word for a few seconds on a Powerpoint slide and then click to a blank screen. Students learn to remember what they saw and to remember what the word said. I think both are great activities!
ReplyDeleteLori
Conversations in Literacy
Lori, holding something in their memory is certainly a skill that applies to all kinds of subject matter, huh?
DeleteFun idea - especially at the end of the year. Did most of your kids do pretty good at this? Sara
ReplyDeleteSara, I'd say most did okay with the easiest ones, but the harder pictures stretched many of them.
DeleteCool! Thanks for sharing:)
ReplyDeleteYou're so welcome!
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