Number Operations

A collection of super simple, visually clear math worksheets designed for elementary learners, featuring addition and subtraction with visual counting supports.

A high-energy, duck-themed 30-minute lesson focusing on counting 1-20, one-to-one correspondence, and number ordering. Students will use visual slides, hands-on counting cards, and practice worksheets to master number recognition and representation.

A collection of ocean-themed math activities focused on counting, identifying numbers 1-20, and developing one-to-one correspondence through task cards and a matching game.

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

Students engage in a tiered math workshop where they choose or are assigned a 'Quest Level' based on their current mastery of word problems. The lesson includes direct instruction on decoding problems and independent practice at three distinct challenge levels.

A foundational math lesson exploring numbers 1-10, basic 2D and 3D shapes, and introductory mathematical symbols through an engaging jungle safari theme.

A foundational math lesson for K-2 special education students focusing on counting, quantity, and one-to-one correspondence up to 20 through a cozy, cabin-themed environment.

A lesson where students use numerical data and counting to track the movement of water through the water cycle, focusing on interpreting charts and comparing quantities.

A foundational lesson exploring the temporal concepts of 'before' and 'after' using numbers and everyday sequences to build early math and logic skills.

Students continue practicing with visual groups, increasing the complexity to numbers 0-10. Focus is on accurate counting and symbol orientation with the 'alligator mouth' visual.

Review and mastery of all three comparison symbols (greater than, less than, equal to) across groups and numerals. Students demonstrate proficiency through a game and a final assessment.

Introducing the equal sign as a way to show when two quantities or numerals are exactly the same. Students practice distinguishing between different and identical amounts.

Transitioning from visual groups to abstract numerals, students practice comparing numbers 0-10 using alligator symbols. Emphasis is on identifying the larger numeral and orienting the symbol correctly.

Students learn to compare groups of objects using the concept of a 'hungry alligator' that always eats the larger quantity. Focus is on visual subitizing and counting to determine more or fewer.

A hands-on introductory lesson for SDC preschool to 1st-grade students to learn addition using ten frames and physical counters within a garden-themed context.

A comprehensive lesson for kindergarten students to master counting objects up to 10 through engaging nature-themed activities, including a 10-page practice workbook and instructional slides.

Cumulative review of counting 1-20 with a focus on accuracy and the target number 15.

Focuses on the stopping point of 20 using visual cues and auditory 'brakes'.

This lesson introduces two-digit addition using the conserving and incrementing strategies, showing students how to bridge visual base-ten models to mental step-by-step counting.

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

A 15-minute review lesson focusing on adding two-digit numbers using place value strategies and base ten block models. Includes a visual presentation and a quick-check practice sheet.

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

A creative hands-on lesson where students build a 'Place Value Person' to represent numbers up to 120 in six different ways, including standard, expanded, and word forms.

A final summative assessment and review to confirm student mastery of place value concepts.

The third lesson focuses on the abstract stage, introducing expanded form and connecting it to the standard form of two-digit numbers.

The second lesson transitions to the representational stage, teaching students how to use place value charts and sketches (sticks and dots) to represent two-digit numbers.

The first lesson in the sequence focuses on the concrete stage, using base-ten blocks and bundles to demonstrate that ten ones make one ten.

A diagnostic assessment to identify student misconceptions regarding place value, specifically focusing on the relationship between bundles of ten and individual ones.

A foundational entry point for students working at a K-1 level. This lesson focuses on teen numbers (11-19) as a 'full container of ten' plus extra units, and reinforces 1-to-1 correspondence and subitizing.

Applying place value knowledge to round 2-digit and 3-digit numbers to the nearest ten and hundred using number lines and visual benchmarks.

Exploring the 10x relationship between ones, tens, and hundreds. Students learn how digits shift and change value as they move across the 3-digit place value chart.

Mastering 3-digit numbers and learning how to compare values using place value logic. Students learn to navigate 'Hundred Heights' using inequality symbols.

Expanding to three-digit numbers, focusing on hundreds and the relationship between standard form, expanded form, and word form. Students 'blue-print' numbers across three places.

An introduction to two-digit numbers using base-ten blocks and the concept of grouping ones into tens. Students learn to build numbers and identify digits in the tens and ones places.

A foundational lesson on place value (tens and ones) using base-ten block visuals and construction-themed hands-on activities.

A lesson focused on adding two-digit numbers to multiples of 10 using place value strategies and mental math. Students will explore how adding tens only changes the tens digit while the ones digit stays the same.

A high-energy, duck-themed 30-minute lesson focusing on counting 1-20, one-to-one correspondence, and number ordering. Students will use visual slides, hands-on counting cards, and practice worksheets to master number recognition and representation.

A collection of ocean-themed math activities focused on counting, identifying numbers 1-20, and developing one-to-one correspondence through task cards and a matching game.

A foundational math lesson for K-2 special education students focusing on counting, quantity, and one-to-one correspondence up to 20 through a cozy, cabin-themed environment.

A foundational math lesson focused on identifying and sequencing numbers in the 'teens' (11-19) using a space exploration theme. Students will practice starting from a given teen number and counting forward to build numerical fluency.

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

A foundational lesson exploring the temporal concepts of 'before' and 'after' using numbers and everyday sequences to build early math and logic skills.

Students practice rapid fluency by choosing the best strategy for a series of mixed problems in a timed hockey sprint.

Students practice the fastest tricks for subtracting numbers that are 9, 8, or 7 away from the total.

Students refine their subtraction fluency by learning to choose the most efficient strategy for any given problem.

Students master facts that are close to doubles by relating them to their halves fluency, using a skeleton racing theme to emphasize speed and precision.

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

Students use double ten-frames to visualize the 'Making 10' strategy, moving pucks to fill the first frame before subtracting the rest.

Students learn to decompose the subtrahend to subtract through 10, using a hockey theme to visualize hitting the target of 10 first.

A collection of super simple, visually clear math worksheets designed for elementary learners, featuring addition and subtraction with visual counting supports.

A beginner math lesson focused on identifying whether to use addition or subtraction to solve word problems within 20, utilizing ten frames and number lines.

A high-energy, duck-themed 30-minute lesson focusing on counting 1-20, one-to-one correspondence, and number ordering. Students will use visual slides, hands-on counting cards, and practice worksheets to master number recognition and representation.

This lesson introduces two-digit addition using the conserving and incrementing strategies, showing students how to bridge visual base-ten models to mental step-by-step counting.

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

Students engage in a tiered math workshop where they choose or are assigned a 'Quest Level' based on their current mastery of word problems. The lesson includes direct instruction on decoding problems and independent practice at three distinct challenge levels.

A fast-paced, space-themed addition game designed to build fluency for sums within 10 through a competitive yet collaborative 'Moon Mission' format.

A comprehensive lesson on identifying US currency, counting totals, and calculating change up to $10 using a marketplace theme.

Applying addition and subtraction skills to solve complex multi-step word problems and 'boss' challenges.

Mastering two-digit subtraction with regrouping, focusing on 'borrowing' from the tens place.

Mastering two-digit addition with regrouping, focusing on the concept of 'carrying' ten ones to the tens place.

Introduces multiplication facts (2s, 5s, 10s) and advanced CVCE words with a canyon-themed speedway.

Focuses on addition and subtraction facts within 10 and common CVCE words using a jungle-themed racing board.

A first-grade lesson exploring the inverse relationship between addition and subtraction through the concept of 'Fact Family Houses'. Students will identify how three numbers can create four related equations.

A 15-minute review lesson focusing on adding two-digit numbers using place value strategies and base ten block models. Includes a visual presentation and a quick-check practice sheet.

A lesson where students use numerical data and counting to track the movement of water through the water cycle, focusing on interpreting charts and comparing quantities.

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

A foundational introduction to subtraction within 5, focusing on the concept of 'taking away' through visual aids and hands-on crossing out strategies.

A first-grade lesson exploring the inverse relationship between addition and subtraction through the concept of 'Fact Family Houses'. Students will identify how three numbers can create four related equations.

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

A foundational introduction to subtraction within 5, focusing on the concept of 'taking away' through visual aids and hands-on crossing out strategies.

Students practice rapid fluency by choosing the best strategy for a series of mixed problems in a timed hockey sprint.

Students practice the fastest tricks for subtracting numbers that are 9, 8, or 7 away from the total.

Students refine their subtraction fluency by learning to choose the most efficient strategy for any given problem.

Students master facts that are close to doubles by relating them to their halves fluency, using a skeleton racing theme to emphasize speed and precision.

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

Students use double ten-frames to visualize the 'Making 10' strategy, moving pucks to fill the first frame before subtracting the rest.

Students learn to decompose the subtrahend to subtract through 10, using a hockey theme to visualize hitting the target of 10 first.

Students use 'Open Number Lines' to visualize subtraction as distance, specifically for problems where counting back is less efficient.

Students refine their number line strategy by learning to jump back to 10 first, then the rest, for more efficient subtraction.

Students learn to use a number line to subtract by 'jumping back' along a track, using a bobsled theme to visualize the path.

Introduces multiplication facts (2s, 5s, 10s) and advanced CVCE words with a canyon-themed speedway.

Focuses on addition and subtraction facts within 10 and common CVCE words using a jungle-themed racing board.

A first-grade lesson exploring the inverse relationship between addition and subtraction through the concept of 'Fact Family Houses'. Students will identify how three numbers can create four related equations.

Students practice rapid fluency by choosing the best strategy for a series of mixed problems in a timed hockey sprint.

Students practice the fastest tricks for subtracting numbers that are 9, 8, or 7 away from the total.

Students refine their subtraction fluency by learning to choose the most efficient strategy for any given problem.

Students master facts that are close to doubles by relating them to their halves fluency, using a skeleton racing theme to emphasize speed and precision.

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

Students use double ten-frames to visualize the 'Making 10' strategy, moving pucks to fill the first frame before subtracting the rest.

Students learn to decompose the subtrahend to subtract through 10, using a hockey theme to visualize hitting the target of 10 first.

Students use 'Open Number Lines' to visualize subtraction as distance, specifically for problems where counting back is less efficient.

Students refine their number line strategy by learning to jump back to 10 first, then the rest, for more efficient subtraction.

Students learn to use a number line to subtract by 'jumping back' along a track, using a bobsled theme to visualize the path.

A beginner math lesson focused on identifying whether to use addition or subtraction to solve word problems within 20, utilizing ten frames and number lines.

A March Madness-themed lesson that provides students with a strategic "Game Plan" for deconstructing and solving math word problems. Students use a basketball-themed graphic organizer to scout for data, draft a playbook, and execute their solution.

Students engage in a tiered math workshop where they choose or are assigned a 'Quest Level' based on their current mastery of word problems. The lesson includes direct instruction on decoding problems and independent practice at three distinct challenge levels.

A comprehensive lesson on identifying US currency, counting totals, and calculating change up to $10 using a marketplace theme.

Applying addition and subtraction skills to solve complex multi-step word problems and 'boss' challenges.

Mastering two-digit subtraction with regrouping, focusing on 'borrowing' from the tens place.

Mastering two-digit addition with regrouping, focusing on the concept of 'carrying' ten ones to the tens place.

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

Students practice rapid fluency by choosing the best strategy for a series of mixed problems in a timed hockey sprint.

Students practice the fastest tricks for subtracting numbers that are 9, 8, or 7 away from the total.

Students refine their subtraction fluency by learning to choose the most efficient strategy for any given problem.

Students master facts that are close to doubles by relating them to their halves fluency, using a skeleton racing theme to emphasize speed and precision.

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

This lesson introduces two-digit addition using the conserving and incrementing strategies, showing students how to bridge visual base-ten models to mental step-by-step counting.

Applying addition and subtraction skills to solve complex multi-step word problems and 'boss' challenges.

Mastering two-digit subtraction with regrouping, focusing on 'borrowing' from the tens place.