AREA OF TRIANGLE - k-12math.info

AREA OF TRIANGLE - SUPERFICIE (TRIANGULO) - AIRE D'UN TRIANGLE
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AIRE D'UN TRIANGLE (Français)

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Wikipedia reference 1 -

Wikipedia reference 2 -

Wikibook -

AREA OF TRIANGLE
Series | Code | Information

Student Textbook Series:
Grades: K-11 (ages: 5-16)

22. NCERT Math 1-11 (2019)
--- New Dehli, India
NOTE PAGE NUMBER BEFORE SELECTING.

21. Ukuqonda Institute 4-10
--- Rietondale, South Africa
NOTE (Online no longer available)

20. Khan Academy K-8 (2015/2019)
--- (OER not textbooks) --

19. Houghton Mifflin K-8 (2015)

18. AAAKnow (formally AAAMath) K-8 (2014)
--- (Copyrighted and not textbooks)

17. Math in Focus - Singapore Math
Dist. by Houghton Mifflin Harcourt K-8 (2013/2015)

16. McGraw-Hill/Glencoe (2013/2014)

15. Bangladesh Mathematics 1-7 (2013)
--- (OA)** (Online no longer available)

14. CK-12 Mathematics 1-5 (2015)
--- (OER but not textbooks)
--- CK-12 Mathematics 6-11 (2012) (OER)*

13. OpenSTAX/CNX/Siyavula Grades 1-9 (2009)
--- Grades 10 and 11 (2011)(OER)*
South Africa edition

12. McGraw-Hill/Glencoe (2002)

11. Houghton Mifflin(2002)
10. Scott, Foresman(1986)
9. Houghton Mifflin(1985)
8. Harcourt Brace Jovanovich(1985)
7. Holt, Rinehart and Winston(1985)
6. Harper and Row(1985)
5. Addison-Wesley(1985)
4. Houghton Mifflin(1981)
3. Laidlaw (1978)
2. D.C. Heath (1972)
1. Harcourt Brace Jovanovich(1972)

Code:
USAGE CODE:
4 Term used (formally developed)
3 Term used (to support formal development)
2 Synonym of term used
1 Term used (enrichment)
- Term not present
--- Textbook not available

(OER)* This is an Open Educational Resource.
(OA)** Open Access but with standard copyright.

Grade:	_K___	_1___	_2___	_3___	_4___	_5___	_6___	_7___	_8___	_9___	_10__	_11__
Average Age:	5	6	7	8	9	10	11	12	13	14	15	16
22-2019 NCERT maths New Dehli, India	---	-	-	-	-	3-40	-	4-212	3-174	4-199	3-123	-
21 2016/2017 Ukuqonda Institute, Rietondale, South Africa	---	---	---	---	-	-	-	4-141	4-178	-	-	---
20-2015 Khan Academy	-	-	-	-	-	-	1	-	-	---	---	---
19-2015 HM	-	-	-	-	-	-	4-397	-	-	---	---	---
18-2014 AAAKnow (update to AAAMath)	-	-	-	-	-	1	1	1	1	---	---	---
17-2013/15 Singapore Math U.S. edition	-	-	-	-	-	4-A276	4-B206	-	-	---	---	---
16-2013 McGraw	-	-	-	-	-	-	4-674	-	-	-	4-781	-
15-2013 Bangladesh (OA)	---	-	-	-	-	4-102	-	4-038	---	---	---	---
14 - 2012/2015 CK12.org (OER)	---	-	-	-	-	-	4	4	-	-	4	4
13-2009/10 OpenSTAX CNX/Siyavula (OER) South Africa edition	---	-	-	-	-	-	-	-	3	4	4	-
12-2002 McGraw	-	-	-	-	-	4-549	4-524	4-489	4-315	-	4-419	-
11-2002 HM	-	-	-	-	-	4-490	4-371	3-022	3-172	-	4-429	-
10-1986 Scott	-	-	-	-	-	4-328	4-284	4-298	4-236	-	4-405	-
9-1985 HM	-	-	-	-	-	2-172	4-190	4-118	-	-	3-326	-
8-1985 HBJ	-	-	-	-	-	4-252	4-276	4-348	4-264	-	4-443	-
7-1985 Holt	-	-	-	-	-	4-324	4-310	4-204	3-342	3-019	4-391	-
6-1985 Harper	-	-	-	-	-	4-316	4-148	4-304	4-277	-	4-381	-
5-1985 Addison	-	-	-	-	-	-	4-352	3-256	4-304	-	4-349	-
4-1981 HM	-	-	-	-	-	-	4-152	4-176	4-156	-	4-313	-
3-1978 Laidlaw	-	-	-	-	-	4-266	4-250	4-280	4-264	-	4-520	-
2-1972 Heath	-	-	-	-	-	4-123	3-104	4-308	3-318	-	3-432	-
1-1972 HBJ	-	-	-	-	-	2-218	2-197	4-187	4-190	-	4-562	-

usage code - page number
(for OER materials, click on the usage code under the desired grade level.)