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Friday, December 30, 2011

Common Core Standard for Operations and Algebraic Thinking

Take a look at this Common Core Standard for Operations & Algebraic Thinking for Fourth Grade:

Gain familiarity with factors and multiples.


·        4.OA.4. Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1–100 is prime or composite.

 Now put on your thinking cap and brainstorm with me a few ways to gain familiarity with factors and multiples. Remember that the Common Core Mathematical Standards states that our students should have mathematical understanding. What can teachers do to lead our students down the road of "Mathematical Understanding" and not drag them by their hands by TELLING them a bunch of rules?
 
#1 Should we give them a cute bookmark like this that lists all the prime numbers to 1000 and ask them memorize it?  Or keep the bookmark handy to use when they do their homework?
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Here is a list of all the prime numbers up to 1,000:
2
3
5
7
11
13
17
19
23
29
31
37
41
43
47
53
59
61
67
71
73
79
83
89
97
101
103
107
109
113
127
131
137
139
149
151
157
163
167
173
179
181
191
193
197
199
211
223
227
229
233
239
241
251
257
263
269
271
277
281
283
293
307
311
313
317
331
337
347
349
353
359
367
373
379
383
389
397
401
409
419
421
431
433
439
443
449
457
461
463
467
479
487
491
499
503
509
521
523
541
547
557
563
569
571
577
587
593
599
601
607
613
617
619
631
641
643
647
653
659
661
673
677
683
691
701
709
719
727
733
739
743
751
757
761
769
773
787
797
809
811
821
823
827
829
839
853
857
859
863
877
881
883
887
907
911
919
929
937
941
947
953
967
971
977
983
991
997
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#2 Could we use that interactive 100's chart that I talked about in the last post....   and .....?

Please share your thoughts in the comment section.  I've got some ideas and I'll share them in my next post.

Deborah Devine

2 comments:

  1. Hey Deborah! I am so sorry to contact you this way, but I couldn't find an email address for you on your blog. I just found your blog on the Fifth Grade Flock (Teaching Blog Central) and wanted to invite you to our Middle and High School (grades 5 and up) New Year's Blog Party! We would love to have you!

    http://bit.ly/uEUT06

    Hope to see you there!

    Kristen Bowers (aka Secondary Solutions)

    ReplyDelete
  2. Hi Deborah,

    I teach 4th grade math. This year I taught my students the divisibility rules for 2,3,5, and 7.The students discovered that they could figure out if the larger number was prime if it wasn't divisible by these numbers. There is also a great website that has prime number mazes that I used. http://www.worksheetworks.com/math/numbers/prime-number-maze.html

    On their assessment, I gave them a section of a hundreds chart and the students had to circle the numbers that were prime. They used what they had learned about the divisibility rules to cross out the numbers that weren't prime. I haven't posted the assessment to my mastery connect account yet, but will do so after the break.

    ReplyDelete