Curated OER
Ten by Ten
Learners participate in hands-on activities using a hundreds chart and counting toes and fingers. They discover the patterns that are created when counting by ten. After a lecture/demo, students practice by using a worksheet embedded in...
Curated OER
Adding Tens
Second graders explore and discuss adding 10 as they predict number patterns with the hundred chart. They work in pairs, groups choose a number, 1-9, and predict what happens if they add 10 to the number. Students make-a-ten strategy...
Curated OER
How Many Ways Can You Count?
Youngsters chorally count to 100 by 1s, 2s, 5s, and 10s, and backwards from 20, using chip markers and a hundreds chart. Includes a printable chart and a teacher checklist for assessing mastery.
Curated OER
Choral Counting I
Using a 100s chart or a number line with a pointer, work with your class to count up to 100 by ones and tens. As a part of daily instruction, prompt your kindergartners to chant count from 1 to 30. Move on to 1 to 50, and then from 1 to...
Illustrative Mathematics
How Many Days Until Summer Vacation?
On the 124th day of school, young mathematicians are asked to find out how many days are left in the 180-day school year. The teacher version to the task offers several ways the problem can be solved, and can be used to guide instruction...
Curated OER
Skip-counting Practice
Young scholars practice skip counting. In this skip counting lesson, students practice skip counting using hundreds boards and patterns. Young scholars complete several examples and problems to ensure their understanding.
Curated OER
Expanded Form-Hundreds
Students write numbers in expanded form. In this expanded form lesson, students are shown a demonstration on the board about writing numbers in expanded form to the hundreds place. A 20-problem worksheet and answer key are included.
Curated OER
Rounding to the Tens Place
First graders practice rounding to the nearest hundred and tens place. In this rounding lesson plan, 1st graders watch a video on and discuss the process of rounding to the nearest hundreds place with the teacher's guidance. Students...
Curated OER
Rounding to the nearest ten
Third graders use a hundreds chart and number line to round to the nearest ten. In this rounding numbers to ten lesson, 3rd graders navigate an online activity to round numbers. Students complete a worksheet and share strategies.
Curated OER
K-5 Mathematics Module: Number and Number Sense
Reinforce number sense with a collection of math lessons for kindergarteners through fifth graders. Young mathematicians take part in hands-on activities, learning games, and complete skills-based worksheets to enhance proficiency in...
Curated OER
Using Groups of Ten to Solve Problems
Upper graders solve math problems involving multiplication using specific strategies. They will use base-ten blocks, hundreds charts, and number lines to solve multiplication problems. Then they will practice several of the strategies...
Elementary AMC
Earth Day Math
Take some time this Earth Day to nourish the growth of your young mathematicians with this series of task cards. Whether it's the four basic operations, place value, money, or elapsed time, these conservation-themed problems will engage...
Curated OER
Expanded Form-Thousands
Students write numbers in expanded form. In this math lesson, students discover what expanded form represents by observng the teacher writing a number in expanded form on the board in a chart. Additionally, students write the answers...
Curated OER
Comparing and Ordering Fractions, Mixed Numbers, and Decimals
Students practice comparing and ordering fractions, mixed numbers, and decimals. In this fractions, mixed numbers, and decimals lesson plan, students examine a decimal place value chart compared to a whole number place value chart. They...
Curated OER
Too Many Tens
Learners practice grouping in different ways by putting numbers up to 1,000 in the correct place value. In this place value lesson plan, students estimate items in a jar and then count them out by grouping them by 10s.
Curated OER
Ordering Greater Numbers
Third graders identify the place value of greater numbers. In this number sense lesson, 3rd graders use a place value chart to properly write a specific number. Students read the number and use the place value map for reinforcement.
Curated OER
Comparing and Ordering Greater Numbers
Students compare and order greater numbers. In this place value lesson, students use a place-value chart to identify which set of numbers has the greatest value.
Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics lesson, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
Curated OER
Place Value of Whole Numbers Through One Million
Third graders construct numbers to the millions place. In this 30-page place value instructional activity, learners create numbers and evaluate the place value of digits. They explore standard and expanded form of numbers. An incredible...
Curated OER
How to Use Expanded Form
Third graders write numbers in expanded form. In this math vocabulary activity, 3rd graders write numbers in expanded form using words only, words and numbers, and numbers only. Each student is given three dice to roll. They then write...
Curated OER
Place Value Made Simple
Elementary schoolers explore place value to the millions place. They construct and evaluate the value of numbers. Working in small groups, pupils problem solve with pocket place value charts, and examine standard and expanded forms. This...
Curated OER
Three-Digit Addition and Subtraction With Regrouping
Second graders access prior knowledge of addition and subtraction using two-digit numbers and calculate easily with them. In this three-digit addition instructional activity, 2nd graders learn to add and subtract three-digit numbers with...
Curated OER
Place Value
First graders practice place value by completing problems that allow them to group 10 items together to create groups of 10 and see what is left over. In this place value lesson plan, 1st graders use cups to put 10 items in them, and...