Common Core Explorer

8.NS.2

These apps, games, and websites will help your students use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions (e.g., π2). For example, by truncating the decimal expansion of √2, show that √2 is between 1 and 2, then between 1.4 and 1.5, and explain how to continue on to get better approximations.
Website
Mangahigh
Phenomenal adaptive math games with a killer teacher dashboard
GRADES
2 - 12
PRICE
Free, Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Game
Prodigy
Adaptive math practice wrapped in role-playing adventure
GRADES
1 - 8
PRICE
Free, Paid
PLATFORM
Linux, Mac, Windows
COMMON SENSE RATING
TEACHER RATING
Website
ALEKS
Strong adaptive learning makes traditional math curriculum more useful
GRADES
3 - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
NOT YET RATED
Website
Flocabulary
Schoolhouse Rock meets Tupac in this delightful hip-hop-based platform
GRADES
K - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Front Row
Zero in on Common Core math and ELA with personalized practice and assessments
GRADES
K - 8
PRICE
Free, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
IXL
Immediate feedback and breadth a major plus, despite emphasis on drills
GRADES
Pre-K - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Khan Academy
Missions boost learning with balance of focus, freedom to explore
GRADES
K - 12
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Mathalicious
Toughest palates can't resist appetizing look at real-world math
GRADES
6 - 12
PRICE
Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Mathspace
Personalized, step-by-step math coaching challenges and adapts
GRADES
6 - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Virtual Nerd
Flip a classroom with these quality video math tutorials
GRADES
6 - 12
PRICE
Free, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Wowzers
Game-based, adaptive math site engages kids with extrinsic rewards
GRADES
K - 8
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Yummy Math
Make math matter with problems kids can relate to
GRADES
3 - 12
PRICE
Free, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Bettermarks
Slick math practice with intuitive tools and plenty of examples
GRADES
4 - 10
PRICE
Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
NOT YET RATED
App
Common Core Quest
Comprehensive CCSS-aligned resource for instruction and assessment
GRADES
K - 12
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Cosmeo
Info-rich site could use detailed performance tracking tools
GRADES
K - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
App
IXL - Math and English
Standards-aligned worksheets help kids develop wide-ranging skills
GRADES
Pre-K - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
App
JogNog
Full access to extensive library of standards-aligned quizzes can get pricey
GRADES
2 - 12
PRICE
Free, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
National Library of Virtual Manipulatives
Novel concept could deliver even more learning with better interactivity
GRADES
K - 12
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
Website
Opus
Basic math problem bank is a bit problematic; more attention to detail would help
GRADES
4 - 8
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
NOT YET RATED
Website
STEM Builder
Usable STEM content and practice diminished by dated interface
GRADES
3 - 12
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
TEACHER RATING
NOT YET RATED
Website
IXL
Give students practice and monitor data for reteaching opportunities
GRADES
8
PRICE
Free to Try, Paid
PLATFORM
n/a
COMMON SENSE RATING
NOT YET RATED
TEACHER RATING
Website
Khan Academy
Middle school math concepts broken into digestible parts
GRADES
8
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
NOT YET RATED
TEACHER RATING
NOT YET RATED
Website
LearnZillion
Video lessons, teacher resources address Common Core math standards
GRADES
8
PRICE
Free
PLATFORM
n/a
COMMON SENSE RATING
NOT YET RATED
TEACHER RATING
NOT YET RATED
Website
PBS LearningMedia
Engaging videos and interactives make standout lesson supplements
GRADES
5 - 8
PRICE
Free, Paid
PLATFORM
n/a
COMMON SENSE RATING
NOT YET RATED
TEACHER RATING
NOT YET RATED