Houghton Mifflin Harcourt
Addition and Subtraction Facts to 20
First graders act out number stories from number cards. In order to learn about addition and subtraction up to 20 lesson, learners become the manipulatives and line up to show the number stories.
Curated OER
Three Little Kittens: Addition Booklet
Students explore math problem solving strategies while reading a nursery rhyme. In this addition lesson, students learn math skills such as solving simple equations, graphing data and extending patterns while reading The Three Little...
Curated OER
Relate Counting to Addition and Subtraction
Use patterns to practice basic addition; pupils count by two, starting from eight and counting on to 20. They record the five numbers missing from the sequence. Below, the worksheet walks learners through the process they use to count by...
Curated OER
Weaving a Story
It's time to investigate patterns! First and second graders construct a paper weaving using a hundreds chart, then use the Ti-10 calculator to make patterns such as adding 3 each time. Learners remove multiples of three from the hundreds...
Curated OER
Addition and Subtraction Facts To 20
First graders use manipulatives, flash cards, number sentences and story problems to practice their addition and subtraction facts to twenty.
Curated OER
Numeracy Lesson Plans
Students complete a series of lesson plans dealing with numbers, counting, and ordering. In this numbers lesson plan, students identify numbers, identify number patterns, count forwards and backwards, and more.
Illustrative Mathematics
Number of the Day
Daily routines not only help to manage classrooms, they can also provide students with rich opportunities for learning. This activity supports young learners in developing their number sense by counting up the school days on a class 100...
Curated OER
The 1 That Got Away
Learners explore number properties. They using multilink blocks to explore doubling of the numbers and explore the patterns to investigate 2 to the power of n and how it is written. In addition, they usse the 100s board, number line and...
Curated OER
Cuisenaire Mats
First graders use Cuisenaire rods to study the mathematical symbols =, <, > for the relationships is equal to, is less than, and is greater than. They use the rods to show visual explanations of common number combinations.