K-12math.info

Most frequently used terms in 21st century (2002-2016) fourth grade (age 9) textbooks

Out of 1000 terms - 316 different terms were used in fourth grade student materials
average 123 terms were used per textbook (text)


Series information

11. Houghton Mifflin(2002)

12. McGraw-Hill/Glencoe (2002)

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

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

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

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

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

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

19. Houghton Mifflin K-8 (2015)

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

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


Range of Terms
(from most frequent)
Textbook series ( Usage Code )
>> Series number >>>
HM
text
11

McG
text
12
CNX OER
text
13
CK-12 OER
Video
14

Bangladash
text
15

McG
text
16

Singapore
text
17

AAA
video
18

HM
text
19

Khan
video
20
FRACTION 4 4 3 1 4 3 3 1 3 1
DENOMINATOR 4 4 4 1 4 4 3 1 3 1
DECIMAL 4 4 3 1 2 4 3 1 4 1
TENTHS HUNDREDTHS 3 3 3 1 4 4 4 1 3 1
TIME 1 3 4 1 4 4 4 1 3 1
PLACE VALUE (NUMBERS) 4 4 4 1 3 4 3 1 3 1
SUBTRACTION (WHOLE) 4 3 3 1 4 4 4 1 3 1
RECTANGLE (AREA) 4 4 3 1 4 4 4 1 3 1
TRIANGLE 3 3 4 1 4 3 3 1 4 1
EXPANDED FORM 4 4 2 1 - 4 4 1 3 1
WHOLE NUMBER 3 3 3 1 - 3 3 1 3 1
ADDITION (WHOLE) 4 3 3 1 4 4 - 1 3 1
DIVISION (WHOLE) 4 3 - 1 4 4 4 1 3 1
FACTOR (WHOLE) 3 4 - 1 3 3 4 1 4 1
MULTIPLICATION (WHOLE) 4 3 - 1 4 3 4 1 3 1
PRIME NUMBER 4 4 - 1 4 4 4 1 4 1
REMAINDER 4 4 - 1 3 4 4 1 4 1
WORD PROBLEMS (WHOLE) 2 2 2 1 2 3 2 2 - 1
ADDITION (FRACTION) 4 4 - 1 4 4 4 1 3 1
EQUIVALENT FRACTIONS 4 4 4 - 4 4 3 1 4 1
NUMERATOR 4 4 4 - 4 4 3 1 3 1
SUBTRACTION (FRACTION) 4 4 - 1 4 4 4 1 3 1
FRACTION TO DECIMAL 4 3 2 - 4 3 4 1 3 1
WEIGHT 3 4 2 1 4 4 3 2 3 -
METRIC UNITS 3 3 2 1 4 4 3 1 3 -
ANGLE 4 4 3 1 4 4 3 - 4 1
ORDERING 3 - 2 1 3 3 3 1 3 -
ROUNDING 4 4 4 - - 4 3 1 3 1
COMPOSITE NUMBER 4 - - 1 4 4 4 1 4 1
DIVISOR QUOTIENT 4 4 - 1 3 3 4 1 3 -
MULTIPLE 1 4 3 1 3 4 4 - 4 -
WORD PROBLEM (FRACTION) 2 2 2 1 - 2 2 - 2 1
ADDITION (DECIMAL) 4 4 - 1 4 3 4 1 3 -
DECIMAL NOTATION 2 4 3 - 4 4 3 1 4 -
PLACE VALUE (DECIMAL) 3 3 4 1 4 3 - 1 3 -
CENTIMETER 3 3 - 1 3 3 3 1 3 -
ACUTE ANGLE 4 4 - 1 3 4 4 - 4 1
RIGHT ANGLE 4 4 - 1 4 4 4 - 4 1
RIGHT TRIANGLE 4 4 - 1 2 4 4 1 4 -
QUADRILATERAL 3 3 4 1 - 4 - 1 4 1
INEQUALITY - - 2 2 2 2 2 2 - 2
INEQUALITY SIGN 3 2 4 - 4 4 2 1 - -
MULT. AND DIVISION 4 3 - - 3 3 3 1 3 -
IMPROPER FRACTION 4 4 4 - - 4 4 1 - 1
MIXED NUMERAL 2 2 - - - 2 2 2 2 2
MONEY 4 3 - 1 2 - - 2 3 1
DEGREE (ANGLE) 3 3 - 1 4 4 3 - 4 -
AREA 4 4 - - - 4 4 1 4 1
PARALLEL LINES 4 4 - - 4 4 4 - 4 1
PERPENDICULAR LINES 4 4 - - 4 4 4 - 4 1
RAY 4 4 - - 4 4 4 - 4 1
OBTUSE ANGLE 4 4 - 1 - 4 4 - 4 1
ACUTE TRIANGLE 4 4 - 1 2 4 - 1 4 -
PROBLEM SOLVING 3 4 3 2 - 4 2 - 4 -
MENTAL ARITHMETIC 3 3 2 - - 3 - 1 3 -
DIVISIBILITY 4 1 - - 4 - - 1 4 1
ESTIMATING SUMS 4 4 - - - 3 3 1 3 -
ESTIMATING PRODUCTS 4 4 2 - - 4 4 - 3 -
SIMPLEST FORM 4 4 - - 2 4 4 - 4 -
SUBTRACTION (DECIMAL) 4 4 - 1 4 - 4 1 - -
LIQUID MEASURE 2 3 3 2 4 - - - 2 -
ENGLISH UNITS 2 - - 1 - 2 2 2 2 -
INCH 3 3 - - - 3 3 1 3 -
KILOMETER - 3 - - 3 3 3 1 4 -
SQUARE (AREA) - 3 - 1 3 4 - 1 3 -
CAPACITY 4 4 - 1 - 4 3 2 - -
LINE 4 4 - - 3 4 - - 4 1
LINE SEGMENT 4 4 - - 4 4 - - 4 1
EQUILATERAL TRI. 4 4 - 1 4 - - 1 4 -
ISOSCELES TRIANGLE 4 4 - 1 4 - - 1 4 -
SCALENE TRIANGLE 4 4 - 1 4 - - 1 4 -
RECTANGLE 4 4 3 - - 4 4 - 4 -
RHOMBUS 4 4 4 1 - 4 - - 4 -
SQUARE 4 4 4 - - 4 4 - 4 -
EQUATION 4 4 - 1 - 4 - 1 3 -
NUMBER SENTENCE 4 3 - 1 2 3 - 1 - -
WRITING NUMBERS 3 - - 2 3 - 3 - - 1
DISTRIBUTIVE (WHOLE) 3 3 - - 3 4 - - 4 -
DIVISION BY TEN - - - - 4 3 - 1 3 1
ESTIMATING QUOTIENTS 4 4 - - - 3 4 - 3 -
GCF 3 - - 1 2 - 4 1 - -
MULT. PROPERTIES 3 3 - - 2 4 - - 2 -
INEQUALITY (DECIMAL) - - - 1 2 - 2 - 2 2
ROUNDING DECIMALS 4 4 - 1 - - 4 1 - -
WORD PROBLEM (DECIMAL) 2 2 - 1 - - 2 2 - -
PROTRACTOR - - - 1 4 4 3 - 4 -
DEGREE NOTATION 3 - - - 4 3 3 - 4 -
FOOT 3 3 - - - 3 3 1 - -
UNIT AREA 2 - 2 - - 2 - 2 2 -
LENGTH 3 4 3 1 - - 3 - - -
PERIMETER 4 4 - - - 4 - 1 4 -
VOLUME 4 4 4 - - - 3 1 - -
POINT 4 3 - - 3 4 - - 4 -
PARALLELOGRAM 4 4 4 - - 4 - - 4 -
TRAPEZOID 4 4 - 1 - 4 - - 4 -
POLYGON 4 4 4 1 - - - 1 - -
NUMBER LINE - 3 3 - - 4 - - 3 -
ADDEND (WHOLE) 4 3 - 1 - - - 1 - -
ARRAY (MULT.) (WHOLE) 4 4 - - - 3 4 - - -
MULTIPLES OF TEN 3 3 - 1 - 3 - - - -
SYMBOLS FOR DIVSION 3 - - 1 - 3 - 1 - -
SYMBOLS FOR MULTIPLICATION. 3 - - 1 2 - - 1 - -
INEQUALITY (FRACTION) - 2 2 - 2 - - - - 2
MULTIPLICATION (FRACTION) - - - - - 4 - 1 3 1
EQUIVALENT DECIMAL - 4 - 1 - - - 1 4 -
ORDERING DECIMALS 3 4 - - - - 3 2 - -
THOUSANDTHS - 3 - 1 4 - - 1 - -
MEASUREMENT - 3 3 1 3 - - - - -
DECIMETER 3 3 - - - - - 1 3 -
MEASUREMENT (LENGTH 3 - - - 3 3 - 1 - -
PERIMETER (QUAD.) - - - 1 - - 2 - 2 2
INTERSECTING LINES 4 4 - - - 4 - - 4 -
NAMING AN ANGLE - - - - 2 - 4 - 4 1
STRAIGHT ANGLE - - - 1 4 - 4 - 4 -
VERTEX (ANGLE) 4 - - - 4 - 4 - 4 -
CIRCLE 4 4 3 - 3 - - - - -
SYMMETRY - 4 3 1 - - 3 - - -
SYMBOLS OF GROUPING 2 - - 1 2 3 - - - -
AVERAGE 4 4 - - - - 4 1 - -
MEAN 4 4 - - - - 4 1 - -
MEDIAN 4 4 - - - - 4 1 - -
MODE 4 4 - - - - 4 1 - -
RANGE (STATISTICS) 4 4 - - - - 4 1 - -
SET - - - 1 - - 3 1 - -
NUMERATION SYSTEM - 1 4 - - - - 2 - -
SIEVE (ERATOSTHENES 1 1 - - - - - - 1 -
ADD BY REGROUPING 3 - - - - 3 - - 3 -
ASSOCIATIVE (ADD.) 4 4 - - - 4 - - - -
COMMUTATIVE (ADD.) 4 4 - - - 4 - - - -
IDENTITY (ADDITION) 2 4 - - - 4 - - - -
LCM - - - - 4 - 4 1 - -
MIXED OPERATIONS - - 3 2 - - - 2 - -
MULT. COMBINATIONS - 2 - 2 - - - 2 - -
REPEATED SUBT. - - - - - 3 - 1 3 -
SYMBOLS FOR ADDITION - - - 1 3 - - 1 - -
COMMON FRACTION - - 4 - - 3 - - - 2
GCF (FRACTION) - 4 - - 2 4 - - - -
RENAMING (FRACTION) - 3 - - - - 3 - 3 -
APPROXIMATION - - 2 2 - 2 - - - -
MEASUREMENT (ANGLE) - - - 1 4 - - - - 1
RULER 3 - - 1 2 - - - - -
TEMPERATURE 3 4 - - - - - 1 - -
CENTIGRADE SCALE 2 2 - - - - - 2 - -
FAHRENHEIT SCALE 4 4 - - - - - 1 - -
TESSELLATION - - 3 1 - - 4 - - -
HEXAGON - 3 4 - - - - 1 - -
PENTAGON - 3 4 - - - - 1 - -
DIAMETER 4 4 - - - - - 1 - -
RADIUS 4 4 - - - - - 1 - -
CONE 3 3 3 - - - - - - -
CUBE 3 3 3 - - - - - - -
CYLINDER 3 3 3 - - - - - - -
RECTANGULAR PRISM 3 3 3 - - - - - - -
SPHERE 4 3 3 - - - - - - -
REFLECTION 1 4 - 1 - - - - - -
ROTATION - 4 - 1 - - 4 - - -
ORDER OF OPERATIONS 3 - - 1 - 4 - - - -
VARIABLE 4 4 - - - 4 - - - -
UNKNOWN - - - - - 4 3 1 - -
BAR GRAPH 3 4 - - - - 3 - - -
LINE GRAPH 4 4 - - - - 4 - - -
PICTOGRAPH 3 4 - - 2 - - - - -
TABLES 2 3 - - - - 4 - - -
PROBABILITY 4 4 - - - - 4 - - -
VENN DIAGRAM (SET) 1 - - - - - - - 3 -
COUNTING - - 3 - - - 3 - - -
EQUALITY - - - - - 2 - 2 - -
EVEN AND ODD NUMBER - - 3 1 - - - - - -
SEQUENCE - - - 1 - - - 1 - -
ADD AND SUBTRACTION RELATION 3 - - - - - - 1 - -
DIVISION WITH DISTRIBUTION - - - - - 3 - - 3 -
DIVISION BY ZERO - - - - - 4 - 1 - -
IDENTITY (MULT.) 2 4 - - - - - - - -
MULTIPLES OF FIVE 2 3 - - - - - - - -
MULT. BY GROUPING - - - - - 2 - - 2 -
REPEATED ADDITION - - - - - - 3 1 - -
THREE ADDENDS - - - 2 - - - 2 - -
NUMBER LINE (FRACTION) 3 - - - - - 3 - - -
PIE APPROACH - - - - 2 - - 1 - -
PROPER FRACTION - - - - 4 - - 1 - -
PROPERTIES (FRACTION) - 4 - - - - - - 3 -
EXPANDED FORM (DECIMAL) - - 3 - - - 3 - - -
NUMBER LINE (INTEGER) 3 3 - - - - - - - -
COMPARISON - - 2 1 - - - - - -
UNIT VOLUME 2 - 2 - - - - - - -
PERIMETER (POLYGON) - 4 - - - - - 1 - -
AREA OF REGION - - - - 4 3 - - - -
DRAWING LINES - - - - - - 3 - - 1
CONSTRUCTION (ANGLE - - - - - 2 - - - 2
SIDES OF AN ANGLE 4 - - - 3 - - - - -
CONSTRUCT TRIANGLES - - 4 - 4 - - - - -
CONGRUENT POLYGONS 2 2 - - - - - - - -
NAMING OF POLYGONS 3 - - - - - - 1 - -
EDGE (POLYHEDRON) 4 4 - - - - - - - -
FACE (POLYHEDRON) 3 4 - - - - - - - -
NETS (POLYHEDRON) 4 4 - - - - - - - -
PYRAMID - 3 3 - - - - - - -
THREE DIMENSION - 3 3 - - - - - - -
TRIANGULAR PRISM 3 3 - - - - - - - -
VERTICES (SOLIDS) 4 4 - - - - - - - -
FORMULA - - - - - - 3 - 4 -
INEQUALITIES 4 - - 1 - - - - - -
TRUE AND FALSE - - - 2 4 - - - - -
WORD PROBLEMS (EQUATION) 2 2 - - - - - - - -
FUNCTION 3 4 - - - - - - - -
EQ. (2 VARIABLES) 2 - - - - 2 - - - -
COORDINATE 4 4 - - - - - - - -
GRAPHING 3 2 - - - - - - - -
LOCATING POINTS 4 3 - - - - - - - -
ORDERED PAIR 4 4 - - - - - - - -
CALCULATOR - - 3 - - - - 1 - -
COLLECTING 3 - - - 4 - - - - -
DOUBLE BAR GRAPH 4 3 - - - - - - - -
FREQUENCY TABLE - - - - 2 - 2 - - -
GRAPH 3 3 - - - - - - - -
COMBINATION 1 1 - - - - - - - -
IF THEN STATEMENT 1 - - - - - - - - -
NUMBER AND NUMERAL - - - - 4 - - - - -
ABACUS - - - - 2 - - - - -
AFTER CONCEPT - - - - - - - 1 - -
BEFORE CONCEPT - - - - - - - 1 - -
BETWEENNESS - - - - - - - 1 - -
COUNTING NUMBER - - - - - - - - 3 -
ORDINAL NUMBER - 4 - - - - - - - -
RENAME NUMBERS - - - - - - - - 3 -
SQUARE NUMBER - 4 - - - - - - - -
ADD BY NUMBER LINE - - - - - - 4 - - -
COLUMN ADDITION - - - - - - - 1 - -
DIVISION COMBINATIONS - - - - - - - 2 - -
DIVISION WITH NUMBER LINE - 3 - - - - - - - -
FACTOR TREE - 1 - - - - - - - -
SUBT. (TWO PLACE) - - - - - - - 2 - -
CONGRUENT PARTS (FRACTION) - - - - - - - - 2 -
GREATER THAN (FRACTION) - - - - - - - 2 - -
LCD (FRACTION) - 2 - - - - - - - -
LCM (FRACTION) - - - - - 4 - - - -
PERCENT - 1 - - - - - - - -
RATIO - - - 1 - - - - - -
RECIPROCAL (FRACTION) - - 3 - - - - - - -
UNLIKE FRACTION - - - - - - 3 - - -
ESTIMATION (DECIMAL 3 - - - - - - - - -
MULTIPLICATION (DECIMAL) - - - - - - - 1 - -
POWERS OF TEN - - - - - - - 1 - -
PROPERTIES (DECIMAL) - 4 - - - - - - - -
REPEATING DECIMAL - - 2 - - - - - - -
INTEGER 4 - - - - - - - - -
NEGATIVE INTEGER 3 - - - - - - - - -
NEGATIVE NUMBER - 4 - - - - - - - -
OPPOSITIES (INTEGER) 4 - - - - - - - - -
POSITIVE INTEGER 3 - - - - - - - - -
POSITIVE NUMBER - 4 - - - - - - - -
PI - - - - - - - 1 - -
MAP INTERPRETATION - - - 1 - - - - - -
SHAPE - - - 1 - - - - - -
UNIT LENGTH - - - 1 - - - - - -
CIRCUMFERENCE - - - - - - - 1 - -
APPROXIMATION (AREA - - - - - - 2 - - -
ENGLISH UNITS (AREA - - - - 2 - - - - -
METRIC UNITS (AREA) - - - - 3 - - - - -
PARALLELOGRAM (AREA - - - - - - - 1 - -
PRISM (AREA) - - 3 - - - - - - -
SQUARE CENTIMETER - 3 - - - - - - - -
SURFACE AREA 4 - - - - - - - - -
SPHERE (VOLUME) - 3 - - - - - - - -
NAMING A POINT 3 - - - - - - - - -
SET OF POINTS - - - - - 3 - - - -
STRAIGHT LINE - - - - 4 - - - - -
ADJACENT ANGLE - - - - 4 - - - - -
COMPLEMENTARY ANGLE - - - - 4 - - - - -
SUPPLEMENTARY ANGLE - - - - 4 - - - - -
VERTICAL ANGLES - - - - 4 - - - - -
BASE (TRIANGLE) - - - - - - 3 - - -
SUM OF ANGLES - - - 1 - - - - - -
CONSTRUCTION (QUAD. - - 4 - - - - - - -
RECOGNITION OF - - - 2 - - - - - -
trapezium - - 4 - - - - - - -
CONVEX POLYGON - - 3 - - - - - - -
REGULAR POLYGON - - 3 - - - - - - -
SIMILAR FIGURE 1 - - - - - - - - -
CURVE - - - - 3 - - - - -
CENTER 4 - - - - - - - - -
CHORD - 4 - - - - - - - -
ELLIPSE - - - 1 - - - - - -
SEMICIRCLE - - - 1 - - - - - -
PLANE - - - - 4 - - - - -
BASE (POLYHEDRON) - 4 - - - - - - - -
SOLID 3 - - - - - - - - -
TETRAHEDRON - - 4 - - - - - - -
AXIS OF SYMMETRY - - - - - - - - - 1
TRANSLATION - 4 - - - - - - - -
SYMMETRY 3 - - - - - - - - -
ADDITION PROPERTY - - - - - - - 2 - -
ALGEBRAIC EXPRESS. 4 - - - - - - - - -
COMMUTATIVE (EQ.) 3 - - - - - - - - -
GRAPHING (EQUATION) - 3 - - - - - - - -
MULT. PROPERTIES 2 - - - - - - - - -
OPEN SENTENCE - - - - 4 - - - - -
SOLUTION 3 - - - - - - - - -
SUBSTITUTION - - - - - - - 1 - -
FUNCTION MACHINE - - - - - 2 - - - -
GRAPHS OF FUNCTIONS 3 - - - - - - - - -
AXES 3 - - - - - - - - -
DISTANCE - - - 1 - - - - - -
ORIGIN 4 - - - - - - - - -
ESTIMATE - - 2 - - - - - - -
FLOW CHART - - 2 - - - - - - -
TABLE FORMAT 3 - - - - - - - - -
STATISTICS - - - - - - - 1 - -
CENTRAL TENDENCY - - - - - - - 1 - -
INTERPRETATION 3 - - - - - - - - -
APPLICATION 2 - - - - - - - - -
EXPERIMENTAL PROB. 3 - - - - - - - - -
PROBABILITY TREE 2 - - - - - - - - -
ZERO PROBABILITY 2 - - - - - - - - -
SEQUENCE - - - - - 4 - - - -

   ©1972 (paper),1985 (Apple II/PC),2005(WWW), 2016 Jim Kelly - All Rights Reserved.