Curated OER
Kindergarten Numbers and Number Sense
Twelve math lessons take kindergartners through the process of number sense and counting. The skills range from counting to ten, filling out ten frames, indicating ordinal position of an object, and counting by fives and tens to one...
Mathematics Vision Project
Module 6: Congruence, Construction, and Proof
Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...
National Security Agency
Backyard Building - Area and Perimeter
Turn young mathematicians into landscape architects with this four-lesson series on area and perimeter. Beginning with a basic introduction to calculating perimeter and area using non-standard units of measurement, this...
National Security Agency
Starting a Restaurant
Through an engaging unit, chefs-in-training will sort and classify data using tally charts. Learners will also create bar graphs to display restaurant data and interpret data from bar graphs using a variety of categories....
National Security Agency
Going Green with Graphs
In this unit designed for second graders, youngsters are introduced to conducting surveys and creating tally charts based on the data they gather. Students then construct bar graphs, and observe the relationships between the two...
Curated OER
Sequencing the Daily Calendar
Students identify the passage of time. They also practice with basic mathematical concepts.
Khan Academy
Khan Academy: Count Objects 1
Practice counting up to 20 objects. Objects are organized neatly into rows and columns. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Count Objects 2
Practice counting up to 20 objects in random patterns. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Count in Pictures
Practice counting objects in pictures. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Multiple Object Lengths
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a ruler and count the length of different objects. The video is followed by a series of practice questions to assess student comprehension...
Khan Academy
Khan Academy: Count in Order
Practice counting without making mistakes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
E-learning for Kids
E Learning for Kids: Math: Movie Theater: Number: Count to 20
On this interactive site, students practice basic number concepts which include reading numerals up to twenty, grouping objects up to twenty, and forward counting to twenty.
Khan Academy
Khan Academy: Count With Small Numbers
Practice counting up to 10 objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
E-learning for Kids
E Learning for Kids: Math: Inca Temple: Number: Count to 30
On this interactive website, student practice various math skills using a real life scenario at the Incan pyramids. Those skills include reading numbers from 0 to 30 and matching numbers to the number of objects.
Khan Academy
Khan Academy: Compare Numbers of Objects 1
Practice counting which group has more objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
E-learning for Kids
E Learning for Kids: Math: Tea Store: Subtraction With Money
These interactive games will explore hexagons, counting, making change, and sorting objects.
E-learning for Kids
E Learning for Kids: Math: Living in the Mill: Length, Area, Volume, Time
On this interactive site students learn to estimate lengths and distances using kilometers, explain the difference between perimeter and area, and measure the volume of a 3D object by counting the cubic centimeters.
PBS
Pbs: Count on It!: Blossom and Snappy Go to the Post Office
Blossom and Snappy help Digit mail a surprise package to Robbie. They visit the post office and postal processing plant to see how it all works.
Khan Academy
Khan Academy: Compare Numbers of Objects 2
Practice counting to see which group has the most things in it. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Word Problems With "More" and "Fewer" 1
Practice solving word problems by finding how many more (or fewer) objects there are. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
PBS
Pbs: Super Bear: Comparing Mass
Think about the relationships between weight and size of similar objects. This interactive exercise focuses on using critical thinking skills and estimation skills to predict how many mini and regular gummy bears it takes to have the...
Khan Academy
Khan Academy: Word Problems With "More" and "Fewer" 2
Practice solving more word problems by finding how many more (or fewer) objects there are. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...