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##### Geometry ... it doesn't make sense

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 smannes Joined: Feb 2008 Posts: 2,273 Senior Member
smannes

Joined: Feb 2008
Posts: 2,273
Senior Member
Geometry ... it doesn't make sense
10-02-2014, 04:12 PM
 #1

I don't understand why the vocabulary of geometry (angles, lines, rays etc) is a part of 4th grade and not included in 3rd's geometry. Don't you need to know the vocabulary to understand classifying quadrilaterals? Perhaps I'm completely off base? I'm so incredibly tired and was going to start to plan for next week but that doesn't look like it's going to happen now.

 1956BD Joined: Aug 2007 Posts: 28,791 Senior Member
1956BD

Joined: Aug 2007
Posts: 28,791
Senior Member
Vocabulary is very important to geometry
10-02-2014, 04:48 PM
 #2

When I taught third grade math I taught geometry vocabulary before I taught my vocabulary unit. It made the unit sooooo much easier.

I call it Shape of the Week Program. Each week I feature a shape. I teach with the definition, a riddle a poem, a story a craft.... It only takes a few minutes a day. Related vocabulary comes up like parallel lines in a square and such.

I am attaching the program. Hope it is helpful.
Attached Files
 3D shape limericks.doc (43.0 KB, 95 views)

 1956BD Joined: Aug 2007 Posts: 28,791 Senior Member
1956BD

Joined: Aug 2007
Posts: 28,791
Senior Member
Part 2
10-02-2014, 04:49 PM
 #3

Here is the rest.
Attached Files
 Basic Geometry Vocabulary Unit.doc (51.5 KB, 88 views)

 teacherwriter Joined: Apr 2011 Posts: 4,905 Senior Member
teacherwriter

Joined: Apr 2011
Posts: 4,905
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Smannes, you're right
10-03-2014, 01:21 AM
 #4

1956BD, Common Core has removed ALL standards for lines, line segments, rays and angles in third grade. It really doesn't make sense, because otherwise how can you teach how to form a polygon and go from there? I haven't yet tackled this in my math rewrite for the year. My outline says take it out; my brain says we need some lessons even though they don't meet standards...

 1956BD Joined: Aug 2007 Posts: 28,791 Senior Member
1956BD

Joined: Aug 2007
Posts: 28,791
Senior Member
I teach in Texas
10-03-2014, 01:17 PM
 #5

No common core here. I guess I misunderstood.

 ilovesecond Joined: Oct 2009 Posts: 127 Full Member
ilovesecond

Joined: Oct 2009
Posts: 127
Full Member
We have it in our NJ curriculum
10-03-2014, 02:27 PM
 #6

and we are Common Core.
I like the idea of teaching it a little each week. I will add that to my routine. That is a great idea.

 Mrs. Br3 Joined: May 2012 Posts: 267 Full Member
Mrs. Br3

Joined: May 2012
Posts: 267
Full Member
I incorporate it all year
10-03-2014, 02:49 PM
 #7

I start teaching that vocabulary around November with other activities before I start teaching geometry, because we stumbled into this same issue last year. They have understand the attributes of the shapes, but didn't know what parallel meant. VERY frustrating!

 bookworm472 Joined: Jan 2014 Posts: 207 Full Member
bookworm472

Joined: Jan 2014
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Not in CC
10-04-2014, 06:16 AM
 #8

It may not be in the CCSS, but I agree the students need to know angles, lines, and parallel in order to classify quadrilaterals. Even though it is a 4th grade standard, I still teach it in third. If they don't know these words then they can't explain how a square and a rhombus are different (or any other comparison). It definitely is backwards!

 luvtulearn Joined: Apr 2010 Posts: 2,907 Senior Member
luvtulearn

Joined: Apr 2010
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ditto. . .
10-04-2014, 11:23 AM
 #9

I have brought up this topic at our grade level meeting and the response was that we will cross that bridge when we come to it. We are moving the geometry chapters around in our textbook to begin geometry by the end of November instead of April in order to give us room to adjust our pacing guide or "add" more skills.

 luvtulearn Joined: Apr 2010 Posts: 2,907 Senior Member
luvtulearn

Joined: Apr 2010
Posts: 2,907
Senior Member
to bounce off of smannes post. . .
10-04-2014, 11:45 AM
 #10

what do you all think about 3rd graders understanding area and perimeter without the background vocabulary, concepts, or skills surrounding, angles, triangles, etc. . .I may be off base but don't you need some prior background knowledge or exposure to these geometric concepts before problem solving area and perimeter?

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