Ck-12.org's Third grade math textbook (8 year old) - a view by k-12math.info
Information | return to proposed CK-12 k-5 math screen
The views expressed on this page are strictly that of k-12math.info and NOT those of CK-12.org or its foundation.
|The following terms are developed and/or defined in this grade level's materials.
|ADD BY REGROUPING (WHOLE NUMBER)||FREQUENCY TABLE ||PROBLEM SOLVING |
|ADDITION (FRACTION) ||HEXAGON ||QUADRILATERAL |
|ANGLE ||IDENTITY (ADDITION) ||RAY |
|AREA ||IDENTITY (MULT.) ||RECTANGLE |
|ARRAY (MULT.) (WHOLE) ||INEQUALITY SIGN ||RECTANGLE (AREA) |
|ASSOCIATIVE (ADDITION) ||LINE ||RHOMBUS |
|BAR GRAPH ||LINE SEGMENT ||RIGHT ANGLE |
|COMMUTATIVE (ADDITION) ||NUMERATOR ||RIGHT TRIANGLE |
|DENOMINATOR ||ORDER OF OPERATIONS ||ROUNDING |
|DISTRIBUTIVE (WHOLE) ||PARALLEL LINES ||SQUARE |
|DIVISION (WHOLE) ||PENTAGON ||SYMBOLS FOR MULTIPLICATION. |
|DIVISOR, QUOTIENT ||PERIMETER ||TIME |
|EQUATION ||PERPENDICULAR LINES ||TRAPEZOID |
|EQUIVALENT FRACTIONS ||PICTOGRAPH ||VARIABLE |
|ESTIMATING SUMS ||PLACE VALUE ||VERTEX (ANGLE) |
|EVEN AND ODD NUMBER ||POINT |
|FACTOR (WHOLE) ||POLYGON |
|The following terms appear in this grade level's materials. At this grade level the terms are used in the lesson proper in examples or illustrations.
The purpose here is to reinforce understanding of the terms.
|ADD AND SUBTRACTION RELATION||MEASUREMENT (LENGTH ||REPEATED SUBT. |
|ADDEND (WHOLE) ||MULT. AND DIVISION RELATION||RULER |
|ADDITION (WHOLE) ||MULT. PROPERTIES ||SET |
|COLLECTING ||MULTIPLES OF TEN ||SHAPE |
|CURVE ||MULTIPLICATION (WHOLE) ||SUBTRACTION |
|DIVISION BY ZERO ||NUMBER LINE ||SYMBOLS FOR ADDITION |
|DIVISION WITH NUMBER LINE ||NUMBER LINE (FRACTION) ||SYMBOLS FOR DIVSION |
|FRACTION ||NUMBER SENTENCE ||TRIANGLE |
|INCH ||ORDERING (NUMBERS)||TRUE AND FALSE |
|INTERPRETATION ||ORDINAL NUMBER ||UNKNOWN |
|INTERSECTING LINES ||REMAINDER ||WHOLE NUMBER |
|MEASUREMENT ||REPEATED ADDITION ||WRITING NUMBERS |
|A synonym of the following terms are used. The synonym helps to bridge the learner's non mathematical experiences to mathematics terms that will more formally be worked on.
A synonym may also be used because these historical terms may have been replaced by a new vocabulary (k-12math.info's list of 1,000 terms has not changed in 40 years).
Wiktionary dictonary may help here.
|ADD. COMBINATIONS (WHOLE) ||INEQUALITY (FRACTION) ||SYMBOLS OF GROUPING |
|ALGEBRAIC EXPRESSIONS||MULT. COMBINATIONS ||THREE ADDENDS |
|CONGRUENT PARTS (FRACTION) ||MULTIPLES OF TWO ||WORD PROBLEMS (WHOLE) |
|DIVISION COMBINATIONS ||PERIMETER (QUADRILATERAL) |
|INEQUALITY (NUMBERS)||PIE APPROACH (FRACTION)|
K-12math.info selected the content that appears here. All terms appear in the lesson proper. The selection process is based upon a content analysis of 2013 to advance copies of 2015 student mathematics
textbook series. Series that base their content on 2010 and/or 2012 standards. The analysis also included content that was felt would be needed for the
transistion to CK-12 existing textbook series.
Editor's Note: This is a very basic outline of the content and how they are to be developed in the lesson proper. These terms need to be used in examples, illustrations, class activities and homework to help further understand them.
Learners age 5 to 11 Grades K through 6 (from Wikieducator's "Come fly with me..." project).
Key points in Writing a textbook. (Especially step 7)
Teaching OER Mathematics.
Learning design a Wikieducator.org project.
Additional observations made while collecting information for this site on unit development in a textbook:
- One type has a chapter unit divided into 3 parts:
Part 1 has a written explanation of the concept being developed (or defined).
Part 2 has examples and illustrations of the concept.
Part 3 classroom and/or homework activities.
- Another approach consists of 2 parts:
Part 1: the concept being developed (or defined) is being used in several carefully designed examples and illustrations.
Part 2: classroom and/or homework activities.
©1972 (paper), 1985 (APPLE II/PC), 2005(www), 2014 Jim Kelly - All Rights Reserved.
Note: www.K-12math.info is not a commercial site or affiliated with any other website of a similar name.