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