Grade 2 Math Expressions Vocabulary Words
Unit 1, Book 1 – Understanding Addition and Subtraction
OSPI word: number pattern, place value, value, whole number
Link to Math Expression Online Glossary for some definitions: http://wwwk6.thinkcentral.com/content/hsp/math/hspmathmx/na/gr2/se_9780547153025_/
eglossary/eg_popup.html?grade=2
Lesson 1 / story problem, in all, altogether, total, zero, proof drawing
Lesson 2 / flash ten, story problem, equation, proof drawing,
matching picture, number flash
Lesson 3 / zero, minus, plus, flash ten, equation, story problem,
number fish
Lesson 4 / nickels, pennies, Penny Strips, Nickel Strips, number fish,
Coin Strips, coin
Lesson 5 / teen numbers, tens, ones, pennies, dimes, pattern,
Secret Code Cards
Lesson 6 / break-aparts, partners, Math Mountain, switch the
partners, equation, teen numbers
Lesson 7 / break-aparts, partners, total, equation, Math Mountain,
teen numbers, Partner House
Lesson 8 / fair shares, doubles, Partner House, teen numbers, partners,
switch the partners, Math Mountain, unknown partner
Lesson 9 / count all, count on, function, equation, teen numbers,
partners, rule, Count-On Cards
Lesson 10 / partner, unknown partner, total, equation, proof drawing,
count on, teen number
Lesson 11 / teen number, teen total, count on
Lesson 12 / teen number, teen total, proof drawing
Lesson 13 / teen total, make a ten
Lesson 14 / partner, total, Math Mountain, equation
Lesson 15 / teen total, count on
Lesson 16 / partners, Math Mountain, equation, Math Mountain Cards
Lesson 17 / number path, number line
Lesson 18 / equation, equals sign, is not equal to, equation chain,
vertical form, Math Mountain
Lesson 19 / equation, Math Mountain, partner, switch the partners, total,
Parachute Drop
Lesson 20 / Math Mountain, equation, partners, total, difference
Lesson 21 / equation, is less than, is greater than, before, after,
between, least, greatest
Lesson 22 / teen totals, teen numbers, Math Mountain, switch the
Partners
Lesson 23 / no vocabulary words for this lesson
Unit 2 – Measurement and Shapes
Lesson 1 / length, centimeter, line segment, horizontal, vertical,
partner lengths
Lesson 2 / square, rectangle, square rectangle, triangle
Lesson 3 / square, rectangle, perimeter
Lesson 4 / triangle, perimeter, round, angle
Unit 3 – Solving Story Problems
Lesson 1 / change plus story problem, change minus story problem
Lesson 2 / change plus story problem, change minus story problem,
situation equation
Lesson 3 / collection story problem
Lesson 4 / Venn diagram, group name
Lesson 5 / comparison story problem, matching drawing, comparison bars
Lesson 6 / comparison story problem
Lesson 7 / teen total, partner, Math Mountain, equation
Lesson 8 / no vocabulary words for this lesson
Lesson 9 / hidden information
Lesson 10 / two-step story problem
Lesson 11 / double, odd, even, Doubles Plus 1, Doubles Minus 1,
two-step story problem
Lesson 12 / change problem, collection problem, comparison problem,
hidden information, two-step problem
Lesson 13 / change problem, collection problem, comparison problem,
hidden information, two-step problem
Lesson 14 / no vocabulary words for this lesson
Unit 4 – Triangles and Quadrilaterals
Lesson 1 / square, rectangle, triangle, perimeter
Lesson 2 / parallel, parallelogram
Lesson 3 / quadrilateral, parallelogram, rectangle, right angle, square
Unit 5 – Addition to 200
OSPI word: number pattern, place value, value, whole number
Lesson 1 / ones, tens, hundreds, decade numbers, Quick Tens
Lesson 2 / ones, tens, hundreds, Number Path, Quick Tens,
Quick Hundreds
Lesson 3 / Quick Tens, Quick Hundreds, hundreds, tens, ones,
decade numbers, word name
Lesson 4 / decade number, Quick Tens
Lesson 5 / 100-partners, 10-partners, decade numbers, round
Lesson 6 / ones, tens, hundreds, estimate
Lesson 7 / odd, even
Lesson 8 / estimate
Lesson 9 / New Groups Above method, New Groups Below Method,
Show All Totals Method
Lesson 10 / addends, sum, Show All Totals method
Lesson 11 / New Groups Below method
Lesson 12 / no vocabulary words for this lesson
Lesson 13 / error
Lesson 14 / perimeter
Lesson 15 / penny, dime, dollar, Quick Ten, Quick Hundred
Lesson 16 / penny, nickel, dime, dollar, cents
Lesson 17 / skip count, forward sequence, backward sequence, rule
Lesson 18 / partners, break-apart, Math Mountains
Lesson 19 / pattern
Lesson 20 / no vocabulary words for this lesson
Unit 6 - Time
Lesson 1 / clock, analog clock, digital clock, hour hand, minute hand,
A.M., P.M., Time Poster
Lesson 2 / analog clock, digital clock, minute hand, hour hand,
5-minute interval
Lesson 3 / half-hour, after the hour, before the hour
Lesson 4 / minute, hour, day, half-hour
Lesson 5 / calendar, month, ordinal number
Unit 7 – Tables and Graphs
Lesson 1 / picture graph, scale, fewer, tally marks, less, vertical,
data
Lesson 2 / picture graph, more, fewer, data, tally, tally marks, key
Lesson 3 / picture graph, more, fewer, same, is greater than (>),
is less than (<)
Lesson 4 / comparison story problems, picture graph, more, fewer, same
Lesson 5 / table, more, fewer, data
Lesson 6 / table, picture graph, data
Lesson 7 / data, tally list, table, picture graph, survey, tally marks
Lesson 8/ picture graph, bar graph
Lesson 9 / bar graph, horizontal, vertical
Lesson 10 / bar graph, horizontal, vertical, scale, title
Lesson 11 / bar graph, circle graph, pie graph
Lesson 12 / ordered pair, coordinate grid, circle graph
Lesson 13 / is greater than, is less than, horizontal bar graph,
vertical bar graph
Lesson 14 / table, bar graph, circle graph
Lesson 15 / predict
Lesson 16 / no vocabulary words for this lesson
Unit 8, Book 2 – Diagonals and Midpoints
Lesson 1 / quadrilateral, square, rectangle, parallelogram, diagonal
Lesson 2 / midpoint, opposite sides
Lesson 3 / diagonal, midpoint
Unit 9 – Subtracting 2-Digit Numbers
OSPI word: digit, number pattern, place value, value, whole number
Lesson 1 / penny, nickel, dime, quarter
Lesson 2 / penny, nickel, dime, quarter, dollar
Lesson 3 / count on, break apart, decade partners, ungroup, Quick Tens
Lesson 4 / ungroup
Lesson 5 / Expanded Method, Ungroup First Method
Lesson 6 / Expanded Method, Ungroup First Method, estimate,
difference
Lesson 7 / Expanded Method, Ungroup First Method
Lesson 8 / Expanded Method, Ungroup First Method
Lesson 9 / hundreds, tens, ones, ungrouping
Lesson 10 / dollar, dime, penny, exact change, decimal notation
Lesson 11 / money string, group, ungroup, Expanded Method
Lesson 12 / money string, Math Mountain, equation, partner,
unknown partner
Lesson 13 / dollar, money string, partner, total, group, ungroup
Lesson 14 / Adding Up Method, money string, Math Mountain, unknown
Partner
Lesson 15 / Adding Up Method, Math Mountain, unknown partner,
unknown addend, total
Lesson 16 / Math Mountain, unknown partner, Adding Up Method,
partner, total
Lesson 17 / no vocabulary words for this lesson
Unit 10 – Shapes and Patterns
OSPI word: number pattern
Lesson 1 / congruent, similar, polygon, quadrilateral, regular polygon,
irregular polygon
Lesson 2 / combine
Lesson 3 / slide, flip, horizontal, vertical, rotation, rotate, turn
Lesson 4 / growing pattern, motion pattern
Lesson 5 / area, square unit, standard unit, square centimeter
Unit 11 – 3-Digit Addition and Subtraction
OSPI word: digit, number pattern, place value, value, whole number
Lesson 1 / ones, tens, hundreds, one thousand
Lesson 2 / hundreds, tens, ones, one thousand, expanded numbers
Lesson 3 / one thousand, hundreds, tens, ones, decade number
Lesson 4 / estimate, actual amount
Lesson 5 / hundreds, tens, ones
Lesson 6 / quarter, dime, nickel, penny, cent
Lesson 7 / cent, dime, penny, dollar, dollar notation, dollar sign ($)
Lesson 8 / dollar, five dollars, Adding up Method, ungrouping
Lesson 9 / hundreds, tens, ones
Lesson 10 / Show All Totals, New Groups Below, New Groups Above
Lesson 11 / table, dollar sign, decimal point, function table
Lesson 12 / hundreds, tens, ones
Lesson 13 / Adding Up Method, unknown partner
Lesson 14 / ungroup, situation equation, solution equation
Lesson 15 / ungroup
Lesson 16 / ungroup, decimal point
Lesson 17 / ungroup, difference
Lesson 18 / ungroup
Lesson 19 / grouping, ungrouping
Lesson 20 / situation equation, solution equation, unknown start,
comparison problem
Lesson 21 / unknown addends, group, ungroup
Lesson 22 / ungrouping, making change, counting on, front-end
estimation
Lesson 23 / no vocabulary words for this lesson
Unit 12 – Metric Measurement and 3-D Shapes
OSPI word: ruler
Lesson 1 / meter, centimeter, decimeter
Lesson 2 / centimeter (cm), decimeter (dm), meter (m)
Lesson 3 / centimeter, decimeter, meter
Lesson 4 / meter, decimeter, centimeter
Lesson 5 / length, width, height, two-dimentional (2-D),
three dimensional (3-D), rectangular prism, face, edge,
vertex, view, volume, cubic unit
Lesson 6 / cone, sphere, square pyramid, cylinder, stack, slide, roll,
Venn diagram, sort attribute, attribute/property
Unit 13 – Multiplication and Fractions
Lesson 1 / multiplication, count by, count-bys, Grouping Drawing,
Equal Shares Drawing
Lesson 2 / multiply, multiplication, count by (count-bys)
Lesson 3 / addition, subtraction, multiplication, count by/count-bys
Lesson 4 / multiplication, count by (count-bys), array
Lesson 5 / array, county by/count-bys, multiplication
Lesson 6 / fewer, more, half, double, twice, equal shares
Lesson 7 / divide, division
Lesson 8 / lines of symmetry, symmetrical, symmetry
Lesson 9 / fractions, unit fraction, numerator, denominator
Lesson 10 / greater than, less than, equal, estimate, order
Lesson 11 / impossible, possible, certain, fair, unfair, probability,
prediction, more likely, less likely, event
Lesson 12 / outcome, prediction, probability, event, organized list,
combination
Lesson 13 / no vocabulary list for this lesson
Unit 14 – Non-Standard and Standard Units of Measure
Lesson 1 / length, mass, capacity, volume, time
Lesson 2 / inch, foot, yard
Lesson 3 / cup, pint, quart, gallon, ounce, pound
Unit E – Extension Lessons
Lesson 1 – cent sign (¢), dollar sign ($)
Lesson 2 – skip count
Lesson 3 – line graph
Lesson 4 – 3-dimensional shape