Number Line

• Grades K–6
• Math

Number Line builds number sense the way researchers recommend: place 37 between 0 and 100, then fractions, decimals and negatives. Hearts keep it gentle and every level can be solved by estimating.

Free trial: 3 days with the first 25 levels of every game. No card needed.

What it teaches

• Place whole numbers on a number line (to 10, 20, 100 and beyond)
• Estimate where a number goes when there are no tick marks
• Fractions (halves, quarters) and decimals (tenths) on a line
• Negative numbers below zero

Chapter by chapter

• Dots to ten: Numbers 0–10
• Up to twenty: Numbers 0–20
• Fifty and one hundred: Numbers to 100
• No ticks: Estimating position
• Halves and quarters: Fractions on a number line (gr 3)
• Tenths: Decimals to tenths (gr 4)
• Big lines: Larger numbers
• Below zero: Negative numbers (gr 6)

Standards

Common Core (Math / ELA)

• CCSS.Math.Content.2.MD.B.6 Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, …
• CCSS.Math.Content.3.NF.A.2 Understand a fraction as a number on the number line; represent fractions on a number line diagram.
• CCSS.Math.Content.4.NF.C.6 Use decimal notation for fractions with denominators 10 or 100 … locate 0.62 on a number line diagram.
• CCSS.Math.Content.6.NS.C.6 Understand a rational number as a point on the number line …

TEKS (Texas)

• TEKS 2.2E Locate the position of a given whole number on an open number line.
• TEKS 2.2F Name the whole number that corresponds to a specific point on a number line.
• TEKS 3.7A Represent fractions of halves, fourths, and eighths as distances from zero on a number line.
• TEKS 4.2H Determine the corresponding decimal to the tenths or hundredths place of a specified point on a number line.
• TEKS 6.2C Locate, compare, and order integers and rational numbers using a number line.

B.E.S.T. (Florida math & ELA)

• MA.K.NSO.2.3 Locate, order and compare numbers from 0 to 20 using the number line …
• MA.2.NSO.1.3 Plot, order and compare whole numbers up to 1,000.
• MA.3.FR.2.1 Plot, order and compare fractional numbers with the same numerator or the same denominator.
• MA.4.FR.1.2 Use decimal notation to represent fractions with denominators of 10 or 100 …
• MA.6.NSO.1.1 Extend previous understanding of numbers to define rational numbers. Plot, order and compare rational numbers.

Practice / process standards (CCSS MP, Florida MTR, TEKS process)

• CCSS.Math.Practice.MP5 Use appropriate tools strategically.
• MA.K12.MTR.6.1 Assess the reasonableness of solutions.