think!Mathematics: Revolutionizing Math Education
think!Mathematics is an integral part of our comprehensive program to revolutionize math education. This textbook series, published by SL Education in Singapore, is renowned worldwide for its innovative approach to building better math students.
think!Mathematics delivers meaningful instruction that enables all learners to explore and connect concepts seamlessly.
Why think!Mathematics?
Whether you are new to teaching or an experienced educator, think!Mathematics equips you with the skills to meet the demands of today’s dynamic instructional landscape. We have fully integrated think!Mathematics with Mathodology, utilizing videos, workshops, and handson, onsite training to implement customized strategies for incredible student success.
Mathodology was the very first distributor of think!Mathematics in the United States, giving us extensive experience and deep knowledge of the program. This makes us the best educators for implementing think!Mathematics.
Dive into the Development of think!Mathematics
Learn about the research behind the program, the key components, and suggestions for implementing think!Mathematics in your school.
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think!Mathematics Scope and Sequence
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Numbers and Operations in Base Ten  Whole Numbers
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Count  Count to 120.  Count to 1,000.  Count to 10,000.  
Count to 120, starting at any number less than 120.  Count by hundreds, tens, and ones.  Count by thousands, hundreds, tens, and ones.  
Skip count by tens to 100  Skip count by 5s, 10s, and 100s.  Skip count by 100s and 1,000s.  
Positions and Ordinal Numbers  Name positions in a race and in a line.  
Name positions in a row from the left and from the right.  
Describe positions.  
Read and Write  Read and write numbers to 120 in numerals and in words.  Read and write numbers to 1,000 using numerals, number names, and expanded form.  Read and write numbers to 10,000 using numerals, number names, and expanded form.  Read and write numbers up to 10,000,000 using numerals, number names, and expanded form.  Read and write numbers up to 10,000,000 using numerals, number names, and expanded form. 
Place Value  Tell what number each digit in a number within 100 stands for.  Tell what number each digit in a number within 1,000 stands for.  Tell what number each digit in a number within 10,000 stands for.  Tell what number each digit in a number within 10,000,000 stands for.  Tell what number each digit in a number within 10,000,000 stands for. 
Compare and Arrange  Compare and arrange numbers within 100.  Compare and arrange numbers within 1,000.  Compare and arrange numbers within 10,000.  Compare and arrange numbers within 1,000,000.  
Round Numbers  Round numbers to the nearest 10 and 100.  Round numbers to the nearest 10, 100, 1,000, 10,000, and 100,000. 
Numbers and Operations in Base Ten  Decimals
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Decimals  Read and write decimal numbers to hundredths.  Read and write decimal numbers to thousandths. 

Tell the place value of a digit in a decimal number with up to 2 decimal places.  Tell the place value of a digit in a decimal number with up to 3 decimal places.  
Compare and arrange decimal numbers with up to 2 decimal places.  Compare and arrange decimal numbers with up to 3 decimal places.  
Round decimal numbers with up to 3 decimal places to the nearest hundredth, nearest tenth, and nearest whole number.  
Use addition and subtraction of like fractions to add and subtract decimal numbers with up to 2 decimal places.  Add and subtract decimals to thousandths.  
Multiply and divide decimals to hundredths with onedigit and two digit whole numbers. 
Operations and Algebraic Thinking
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Decompose Numbers  Make different number bonds for numbers up to 100.  Decompose two and three digit numbers flexibly using number bonds.  
Make number stories.  
Addition and Subtraction  Add by counting, counting on, doubling, making 10, adding ones, and adding tens.  Add and subtract numbers up to 1,000 without and with regrouping.  Add and subtract numbers up to 1,000 without and with regrouping.  Add and subtract numbers up to 100,000 without and with regrouping.  
Add three numbers.  Add four numbers.  Estimate sums and differences.  Estimate sums and differences.  
Write addition and subtraction equations.  Add and subtract numbers mentally.  Add and subtract numbers mentally.  Add and subtract numbers mentally.  
Make addition and subtraction stories.  
Subtract by crossing out, counting back, subtracting ones, and subtracting from 10.  
Make families of addition and subtraction facts.  
Find 1 more, 10 more, 1 less, 10 less  Find 10 more, 100 more, 10 less, 100 less  
Do simple addition and subtraction and add and subtract numbers with regrouping.  
Add odd and even numbers.  
Multiplication and Division  Make equal groups and rows, and use skipcounting and adding to multiply.  Multiply two 1digit numbers to get multiplication facts, and multiply 2digit by 1digit numbers.  Multiply 3digit numbers by 1digit numbers, 4digit numbers by 1digit numbers, and 2digit numbers by 2digit numbers.  Multiply whole numbers by powers of ten and multiply numbers up to 4digit numbers by 1digit whole numbers and 3digit numbers by 2digit whole numbers. 

Divide 2digit number by 1digit number using multiplication facts.  Divide 3digit and 4digit numbers with and without remainder.  Divide numbers up to 4digit numbers by 2digit whole numbers and divide whole numbers by powers of ten.  
Interpret remainders in division.  
Write multiplication equations as repeated addition.  Make a family of multiplication and division facts.  
Use multiplication and division to solve word problems.  
Find multiples and factors, identify prime numbers and composite numbers.  
Recognize odd and even numbers and write even numbers as a doubles equation.  
Word Problems  Solve word problems involving addition or subtraction, and addition of three numbers.  Solve word problems involving addition, subtraction, multiplication, and division.  Solve word problems involving addition, subtraction, multiplication, and division.  Solve word problems involving addition, subtraction, multiplication, and division.  Solve word problems involving addition, subtraction, multiplication, and division. 
Solve word problems involving whole numbers and fractions including mixed numbers and decimals. 

Draw models for different situations to solve addition and subtraction word problems.  Draw models for different situations to solve addition and subtraction word problems.  Solve word problems using objects, diagrams, and equations including a letter to represent an unknown number.  Solve word problems using objects, diagrams, and equations including a letter to represent an unknown number.  Solve word problems using objects, diagrams, and equations including a letter to represent an unknown number. 

Algebra  Use words, symbols, and letters to describe and complete a number pattern.  
Write algebraic expressions.  
Show relationship between numbers in number patterns using a graph. 
Number and Operations  Fractions
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Understand Fractions  Show halves and fourths (quarters) of a shape.  Show halves, fourths (quarter), and thirds of a shape.  Show half, fourth (quarter), third, sixth, and eighth of a shape.  Show half, fourth (quarter), third, fifth, sixth, eighth, tenth, and twelfth of a shape.  
Write half, fourth (quarter), and third in words and symbols.  Write half, fourth (quarter), third, sixth, and eighth in words and symbols, and express whole numbers as fractions.  Write half, fourth (quarter), third, fifth, sixth, eighth, tenth, and twelfth in words and symbols.  
Recognize and write mixed numbers and improper fractions.  
Find equivalent fractions.  Find equivalent fractions.  
Compare parts.  Compare and order fractions by using visual fraction models and showing fractions on number lines.  Compare and order fractions by using visual fraction models and showing fractions on number lines.  
Show fractions including mixed numbers and improper fractions on a number line.  
Write mixed numbers as improper fractions and improper fractions as mixed numbers.  Write improper fractions as mixed numbers.  
Simplify fractions.  
Addition and Subtraction  Add and subtract fractions and mixed numbers.  Add and subtract fractions and mixed numbers.  
Solve word problems involving addition and subtraction of fractions and mixed numbers.  Use estimation to check answers to calculations.  
Multiplication and Division  Multiply fractions including mixed numbers by whole numbers.  Multiply fractions including mixed numbers by whole numbers.  
Multiply two fractions.  
Divide unit fractions by whole numbers, and vice versa.  
Solve word problems involving multiplication of fractions.  Solve word problems involving addition, subtraction, multiplication, and division of fractions including mixed numbers. 
Measurement and Data
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Length and Height  Measure length and height in units.  Measure length and height in meters, centimeters, yards, feet, and inches.  Measure length and height using rulers marked with halves and fourths of yards, feet, inches, meters, and centimeters.  Measure length and height in miles, yards, feet, inches, kilometers, meters, and centimeters.  Measure length and height in miles, yards, feet, inches, kilometers, meters, centimeters, and millimeters. 
Convert customary units including yards, feet, inches. Convert metric units including kilometers, meters and centimeters.  Convert measurements of length (cm, mm, m, cm, km, m, ft, in, yd, and ft). 

Compare and order length and height by observation.  Compare and order length and height by measuring.  
Estimate length and height using yards, feet, inches, meters, and centimeters.  Read scales on rulers (marked with halves and fourths of yards, feet, inches, meters, and centimeters) to measure length and height in yards, feet, inches, meters, and centimeters.  Read scales on rulers including meter stick to measure length and height in yards, feet, inches, meters, and centimeters.  Read scales on rulers including meter ruler to measure length and height in centimeters, millimeters, and meters. 

Solve word problems on length and height.  Solve problems involving measurements of length.  Solve problems involving conversion of measurements of length. 

Mass  Compare, measure and estimate mass in kilograms and grams.  Measure mass in tons, pounds, ounces, kilograms, and grams.  Measure mass in pounds, ounces, kilograms, and grams. 

Change kilograms and grams and tons, pounds, and ounces.  Convert measurements of mass (between kg and g, and lb and oz). 

Read digital and analog scales.  Read scales on weighing machines.  Read scales on weighing machines. 

Solve word problems on mass.  Solve problems involving measurements of mass.  Solve problems involving conversion of measurements of mass. 

Volume of Liquid  Measure and estimate volume of liquid in milliliters and liters.  Measure volume of liquid in liters, milliliters, gallons, quarts, pints, cups, and fluid ounces.  Measure volume of liquid in liters, milliliters, gallons, quarts, pints, cups, and fluid ounces. 

Convert metric volume of liquid: liters, milliliters. Convert customary volume of liquid: gallons, quarts, pints, cups, and fluid ounces.  Convert measurements of volume (l, ml, cup, fl oz, pint, cup, quart, pint, gallon, and quart). 

Read scales on beakers and measuring cylinders.  Read scales on beakers and measuring cylinders. 

Solve word problems on volume.  Solve problems involving measurements of volume.  Solve problems involving conversion of measurements of volume. 

Volume of Solids  Find the volume of solids, including cubes, and right rectangular prisms. 

Find the capacity of rectangular boxes.  
Solve problems involving volume of solids. 

Time  Use words such as minutes, hours, days, weeks, months, and years.  Use words such as minutes, hours, days, weeks, months, and years.  Use words such as seconds, minutes, hours, days, weeks, months, and years.  Use words such as seconds, minutes, hours, days, weeks, months, and years.  Use words such as seconds, minutes, hours, days, weeks, months, years, decades, and centuries. 
Tell and write time in hours and halfhours using analog and digital clocks.  Tell and write time from analog and digital clocks to the nearest 5 minutes, using a.m. and p.m.  Tell and write time from analog and digital clocks to the nearest minute, using a.m. and p.m.  Tell and write time to the nearest minute, using a.m. and p.m. and a 24hour clock.  Tell and write time to the nearest minute, using a.m. and p.m., and 24hour clock notation.  
Arrange the days of the week and months of the year in order.  Arrange the days of the week and months of the year in order.  Arrange the days of the week and months of the year in order.  
Recognize days and months on a calendar.  Use a calendar to find things like the number of weeks in a year.  Use a calendar to find the number of days given the start and end date.  Find the date (e.g. arrival date) in word problems.  
Convert units of time: minutes and hours.  Convert units of time: seconds, minutes, hours and solve problems.  Change units of time including hours, minutes, and seconds. 

Measure time intervals in minutes.  Measure time intervals in seconds, minutes, and hours.  Measure time intervals in seconds, minutes, hours, minutes and seconds, and hours and minutes. 

Solve word problems involving addition and subtraction of time intervals.  Solve problems involving time in hours, minutes, and seconds.  Solve word problems involving time. 

Money  Recognize coins and count to tell the amount of money.  Name the amount of money in dollars and cents.  Tell an amount of money and write it as a decimal.  
Add and subtract money in dollars and cents.  Add and subtract money in dollars.  Add, subtract, multiply, and divide money in dollars and cents.  
Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately.  Solve word problems involving addition and subtraction of money.  Solve problems involving multiplication and division of money.  Solve word problems involving addition, subtraction, multiplication, and division of money. 

Data  Sort data into categories. Make lists and tables.  Draw picture graphs, bar graphs, and line plots.  Draw, read, and interpret picture graphs, bar graphs, and line plots.  Draw, read, and interpret line plots displaying a data set of measurements in fractions of a unit (4ths, 6ths, 8ths).  Draw, read, and interpret line plots displaying a data set of measurements in fractions of a unit ( 12 , 14 , 18 ). 
Make and read tally charts.  Read and interpret picture graphs, bar graphs, and line plots.  Draw, read, and interpret line graphs. 

Solve problems using information from picture graphs, bar graphs, and line plots.  Solve problems using information from picture graphs, bar graphs, and line plots.  Solve problems using information from line plots (involving operations on fractions).  Solve problems using information from line plots (involving operations on fractions) and line graphs. 
Geometry
Grade 1  Grade 2  Grade 3  Grade 4  Grade 5  

Twodimensional Shapes  Name two dimensional shapes (square, rectangle, triangle, circle, hexagon, and trapezoid).  Name two dimensional shapes (triangles, squares, rectangles, trapezoids, hexagon, pentagor, and circles). Identify polygons, quadrilaterals, sides, and vertices.  Recognize squares, rectangles, and rhombuses as examples of quadrilaterals.  Identify scalene, isosceles, equilateral, and right triangles.  Identify types of polygons. Define the terms rectangle and parallelogram. 
Draw two dimensional shapes.  Identify congruent figures.  
Sort two dimensional shapes in different ways (e.g. defining attributes: sides and vertices, nondefining attributes: color, orientation, and size).  Sort two dimensional shapes in different ways (e.g. number of angles, sides, and vertices).  Sort two dimensional shapes based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size.  Sort two dimensional shapes in a hierarchy according to their properties.  
Make and complete patterns with two dimensional shapes (e.g. shape, size, color, and orientation).  
Make two dimensional shapes and figures using other two dimensional shapes.  Make two dimensional shapes using other two dimensional shapes.  
Identify symmetric figures.  
Identify and draw lines of symmetry.  
Threedimensional Shapes  Name three dimensional shapes (cubes, rectangular prisms, cylinders, cones, and spheres).  Name cubes, rectangular prisms, cylinders, cones, and spheres.  
Recognize three dimensional shapes from drawings.  
Build structures with three dimensional shapes (cube, sphere, cylinder, cone, and rectangular prism).  Make structures using three dimensional shapes (cube, sphere, cylinder, cone, rectangular prism, and triangular prism).  
Sort three dimensional shapes in different ways (e.g. defining attributes: faces, sides and vertices; nondefining attributes: color, orientation, and size).  Sort three dimensional shapes in different ways (e.g. type of faces).  
Make and complete patterns with three dimensional shapes (e.g. number of cubes used to build each shape).  
Angles  Understand what an angle is and identify angles in twodimensional shapes (laying the foundations of angles).  Identify right angles and know that a right angle is 90 degrees.  
Measure angles using a protractor and use degrees as a unit of measure of angles.  
Identify acute angles, right angles, and obtuse angles.  
Draw angles.  
Identify and draw point, line, line segment, endpoints, rays, and perpendicular and parallel lines.  
Solve problems involving angles.  
Coordinate Geometry  Use coordinates.  
Plot points and graphs identified by coordinates.  
Solve problems involving graphs.  
Perimeter and Area  Partition a rectangle into rows and columns of same size squares and count to find the total number of them (laying the foundations of perimeter and area).  Measure and calculate the perimeter of figures.  Find the perimeter and area of polygons including squares and rectangles.  
Use formulas to find the perimeter and area of squares and rectangles.  
Find the length of a side of a figure given its perimeter.  Find the length of a side in a square or a rectangle, given its perimeter or area.  
Measure area using a square unit.  Use different units of area.  
Find area of figures using square grids.  
Calculate area of squares and rectangles using multiplication.  
Find the area of figures made up of squares and rectangles.  
Solve problems involving perimeter (squares, rectangles, triangles, and trapezoids) and area (squares and rectangles).  Solve problems involving perimeter and area of polygons.  
Show that figures that have the same area can have the same or different perimeter. 
What Teachers Are Saying About think!Mathematics
I am obsessed with this program! My son and daughter both love it so much and I am loving it too! Math was always one of my favorite subjects and I am a bit embarrassed to say but at 40 years old, I am learning new tricks through this program. My math skills have improved and I am so happy that my children are loving math too! So grateful to have found this program!
think!Mathematics provides our wide range of learners with multiple entry points for problemsolving. Students approach math as a language and are immersed and encouraged to try various strategies. They learn from one another. Sarah Schaefer's workshops with our school's Lower School teachers continue to generate excitement amongst our faculty, not just as teachers of math but as mathematicians themselves.