Curated OER
Counting, Properties of Numbers, and Reasoning about Numbers
Five days of lessons develop number sense and counting patterns, including odd and even numbers, 5s and 10s, doubles, and ways to make 10. Each session opens with fun finger play to reinforce counting and reasoning about numbers. Various...
K-5 Math Teaching Resources
Base Ten Mat (Tens and Ones with Tens Frame)
Working with base 10 blocks? Use this base 10 mat to organize blocks, tens and ones with one ten frame, and determine how many groups of blocks can be used to represent numbers.
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
Jump on Tens
Give the actors in your class a chance to shine as they act out skip-counting. In their roles, they take turns shouting out different number patterns and jumping when reaching the given goals set for each number family. A fun and...
Illustrative Mathematics
Assessing Counting Sequences Part I
Working with kindergartners one-on-one, you will identify their ability to count by 1s and 10s and conclude what levels they have mastered, as well as where they need skills practice and instruction. The commentary provided will aid you...
Curated OER
Primary Counting Skills
Class members drill and practice counting skills from 1 to 20. They count along with a puppet and when the puppet makes a mistake, they correct it. In pairs, they connect cubes to make a train and count the number used. On the last of...
Curated OER
Study Buddies: Counting Back Tens and Ones
In this math worksheet, students will work with a coach to solve a problem in which they must subtract by counting back by tens and ones. Students will follow a step-by-step process and notes are provided for the coach.
Curated OER
Tens and Ones Guided Lesson
Understanding place value will open up a world of math comprehension for your learners. There are three parts to this worksheet, all with the objective of revealing the decomposition of numbers into tens and ones. First, scholars examine...
Houghton Mifflin Harcourt
Mental Math: Subtract Tens - Homework 12.1
Now that your class can add by 10s they can start subtracting by 10s. This clear, learner-friendly worksheet provides a good example (10-rods are pictured) and 7 problems to solve. Relates groups of tens to single-digit numbers, which...
Curated OER
Partition Into thousands, hundreds, tens and ones
An abacus may be old, but it's still a great visual tool. Young mathemeticians look at, study and analyze 8 abacus images. They look at each image to determine how many beads are in each place value. They work with thousands, hundreds,...
Curated OER
Counting by 2s, part 2
Two, four, six, eight...can your scholars count by twos? They fill in missing numbers in 18 number sequences, all of which require skip counting by twos. Some begin on an even number and others odd, however all of these are whole...
Curated OER
Counting Circles
Here is another learning game that will engage your kindergartners and support them with their counting fluency. Forming a circle where everyone faces inward, choose a counting sequence (counting frontward or backward) with no more than...
Curated OER
Learn To Count By Tens
In this counting by tens instructional activity, students count groups of ten, observe the numerals ten to one hundred, and solve the total of ten sets of ten.
Curated OER
Tens and Units
Images of base ten blocks are used to reinforce counting past 10. Learners will count along, adding units to each 10 as they go from 10 to 30. Each number is shown on a 100 block, as blocks of 10s and 1s, and in numeric form as tens and...
Curated OER
Counting Back in Tens
In this counting back in tens worksheet, students count down in tens from one number given to another. A website reference for additional activities is given.
Curated OER
Counting Back in Tens
In this counting backwards in tens worksheet, students practice counting down in tens in 4 rows of numbers. Students count down in tens from 50 to 0, 70 to 20, 90 to 40 and 60 to 10.
Curated OER
Counting In Groups Of 10
In this counting in groups of ten worksheet, students count ten dots and circle them in six boxes, write how many ten-groups they get and then write how many ones are left over.
Illustrative Mathematics
Counting Stamps
Stamps come in sheets, strips, and singles. Young mathematicians use their knowledge of hundreds, tens, and ones to determine how many stamps Mike has altogether.
K-5 Math Teaching Resources
Base Ten Mat (Tens and Ones)
When working with base blocks, you need a base ten mat. Well, here it is! Organize your tens and ones using this mat to represent, count, and examine numbers.
Curated OER
Counting Back in Tens
For this counting back in tens worksheet, students complete number lines. In this problem solving worksheet, students count down to fill in the blanks for four number lines.
Curated OER
Counting Back in Tens (pg. 1)
For this counting by 10 worksheet, 1st graders count down in tens from the numbers 87, 68, 92 and 77. There are 5 boxes to be filled in for each number.
Curated OER
Counting by Tens
First graders listen to "One Is a Snail, Ten Is a Crab", a story about a crab with ten feet and counting by tens. They create their own crab to practice counting by tens to one hundred.
Curated OER
Sequencing and Counting on
This series of slides gives learners an opportunity to count on by 10's in number sequences then discuss how to apply counting on to addition and subtraction problems. Learners count on and back by 1's, 10's, and 100's.
Curated OER
Learn to Count
In this learning to count by tens instructional activity, students observe ten groups of ten die and read the numbers totaling each group of ten. Counting by ten to one hundred, students develop an understanding that ten sets of ten die...