Number Operations

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.

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.

Students use their knowledge of doubles to solve subtraction facts (halves), visualizing the symmetry of a snowboarding half-pipe.

Students focus on the 'Friends of 10' subtraction facts, using the goal line in hockey to visualize how many more are needed to reach the total of 10.

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.

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.

A lesson focused on mastering three-digit subtraction with regrouping, specifically targeting the challenge of subtracting across zeros and applying these skills to real-world word problems.

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.

The final week combines all themes for an epic wrap-up. Problems range from enchanted forests to backyard science experiments.

Week 5 returns to everyday life with neighborhood-focused problems, including community garden planning, lemonade stands, and local park events.

Week 4 explores seasonal and holiday scenarios. Students solve problems related to garden planting, snow day preparations, and holiday gift giving.

Week 3 dives into a world of fantasy and adventure. Problems involve dragon hoards, wizard potion ingredients, and knightly armor sets.

Week 2 features animal-themed two-step word problems. Students calculate zoo animal diets, pet store inventories, and wildlife observations.

Week 1 focuses on two-step word problems set in everyday school and home environments. Students solve problems involving lunchroom supplies, library books, and household chores.

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.

Provides a comprehensive visual reference for 4th-grade place value concepts, extending up to the millions place.

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 collection of teacher-facing tools including scoring keys, result interpretation guides, and class-wide data tracking charts to help educators act on diagnostic findings.

A diagnostic assessment for 5th-grade students focusing on decimal operations, powers of 10, multi-digit division, and adding/subtracting fractions with unlike denominators.

A diagnostic assessment for 4th-grade students targeting multi-digit multiplication and division, place value to 1,000,000, fraction equivalence, and basic decimal notation.

A diagnostic assessment for 3rd-grade students covering rounding, multi-digit addition/subtraction, multiplication and division concepts, and introductory fraction understanding.

A diagnostic assessment for 2nd-grade students focusing on place value to 1,000, addition and subtraction within 100, and early foundations of multiplication through arrays.

A collection of 9 standardized probes and tracking tools to monitor student growth in number sense and fractions.

Provides a comprehensive visual reference for 4th-grade place value concepts, extending up to the millions place.

Assesses 2nd-grade proficiency in basic addition and subtraction operations, including word problems and regrouping.

Deepens 5th-grade students' understanding of fraction equivalence through visual modeling and symbolic manipulation.

Focuses on building fluency with multiplication facts for 3rd-grade students through engaging practice drills.

A high-engagement, interactive lesson focusing on place value up to 100 using base-ten blocks. Designed for 2nd-grade students on IEPs, this lesson uses a 'building' theme to make abstract numbers concrete.

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 foundational lesson for 2nd and 3rd grade students to master 2-digit addition and subtraction with regrouping (carrying and borrowing) through a 'Number Lab' engineering theme.

Students will learn to add and subtract two-digit numbers without regrouping by focusing on place value through a 'Number Neighborhood' theme.

A comprehensive lesson on adding and subtracting within 100 using place value strategies, including a professional proficiency scale and a diagnostic placement assessment.

Students will master counting and subitizing up to 20 using sea-themed manipulatives and visual aids. The lesson emphasizes recognizing patterns and building one-to-one correspondence.

A hands-on geometry project where 2nd-grade students apply perimeter concepts to design their own zoo layouts. Students will calculate the distance around animal habitats using grids and addition 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.

Students use their knowledge of doubles to solve subtraction facts (halves), visualizing the symmetry of a snowboarding half-pipe.

Students focus on the 'Friends of 10' subtraction facts, using the goal line in hockey to visualize how many more are needed to reach the total of 10.

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 lesson focused on mastering three-digit subtraction with regrouping, specifically targeting the challenge of subtracting across zeros and applying these skills to real-world word problems.

A collection of teacher-facing tools including scoring keys, result interpretation guides, and class-wide data tracking charts to help educators act on diagnostic findings.

A diagnostic assessment for 5th-grade students focusing on decimal operations, powers of 10, multi-digit division, and adding/subtracting fractions with unlike denominators.

A diagnostic assessment for 4th-grade students targeting multi-digit multiplication and division, place value to 1,000,000, fraction equivalence, and basic decimal notation.

A diagnostic assessment for 3rd-grade students covering rounding, multi-digit addition/subtraction, multiplication and division concepts, and introductory fraction understanding.

A diagnostic assessment for 2nd-grade students focusing on place value to 1,000, addition and subtraction within 100, and early foundations of multiplication through arrays.

A collection of 9 standardized probes and tracking tools to monitor student growth in number sense and fractions.

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.

The final week combines all themes for an epic wrap-up. Problems range from enchanted forests to backyard science experiments.

Week 5 returns to everyday life with neighborhood-focused problems, including community garden planning, lemonade stands, and local park events.

Week 4 explores seasonal and holiday scenarios. Students solve problems related to garden planting, snow day preparations, and holiday gift giving.

Week 3 dives into a world of fantasy and adventure. Problems involve dragon hoards, wizard potion ingredients, and knightly armor sets.

Week 2 features animal-themed two-step word problems. Students calculate zoo animal diets, pet store inventories, and wildlife observations.

Week 1 focuses on two-step word problems set in everyday school and home environments. Students solve problems involving lunchroom supplies, library books, and household chores.

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.

Mastery of the high-level multiplication facts for numbers 11 and 12, along with comprehensive mixed-fact reviews for ultimate fluency.

Progressive multiplication facts for numbers 6 through 10, focusing on the more challenging mid-range factors. Includes individual fact quizzes for each number.

Introduction to multiplication facts focusing on the foundational numbers 0 through 5. Includes individual fact quizzes for each number to build confidence and speed.

A collection of teacher-facing tools including scoring keys, result interpretation guides, and class-wide data tracking charts to help educators act on diagnostic findings.

A diagnostic assessment for 5th-grade students focusing on decimal operations, powers of 10, multi-digit division, and adding/subtracting fractions with unlike denominators.

A diagnostic assessment for 4th-grade students targeting multi-digit multiplication and division, place value to 1,000,000, fraction equivalence, and basic decimal notation.

A diagnostic assessment for 3rd-grade students covering rounding, multi-digit addition/subtraction, multiplication and division concepts, and introductory fraction understanding.

A diagnostic assessment for 2nd-grade students focusing on place value to 1,000, addition and subtraction within 100, and early foundations of multiplication through arrays.

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 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.

This lesson introduces the concept of repeated addition as a foundation for multiplication, using visual groups and arrays to build conceptual understanding.

A final project-based assessment where students demonstrate their ability to build arrays, identify even/odd groups, and write repeated addition equations.

Students practice skip counting by 2s, 5s, and 10s as a fast-track method for counting large groups of building supplies.

Students explore even and odd numbers by pairing objects and building 'towers of two' to see if any blocks are left over.

Students build and analyze rectangular arrays (up to 5x5) using building blocks, connecting the rows and columns to repeated addition.

Students use manipulatives to create equal groups and write repeated addition equations to find the total, laying the conceptual groundwork for multiplication.

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.

Mastery of the high-level multiplication facts for numbers 11 and 12, along with comprehensive mixed-fact reviews for ultimate fluency.

Progressive multiplication facts for numbers 6 through 10, focusing on the more challenging mid-range factors. Includes individual fact quizzes for each number.

Introduction to multiplication facts focusing on the foundational numbers 0 through 5. Includes individual fact quizzes for each number to build confidence and speed.

A collection of teacher-facing tools including scoring keys, result interpretation guides, and class-wide data tracking charts to help educators act on diagnostic findings.

A diagnostic assessment for 5th-grade students focusing on decimal operations, powers of 10, multi-digit division, and adding/subtracting fractions with unlike denominators.

A diagnostic assessment for 4th-grade students targeting multi-digit multiplication and division, place value to 1,000,000, fraction equivalence, and basic decimal notation.

A diagnostic assessment for 3rd-grade students covering rounding, multi-digit addition/subtraction, multiplication and division concepts, and introductory fraction understanding.

A diagnostic assessment for 2nd-grade students focusing on place value to 1,000, addition and subtraction within 100, and early foundations of multiplication through arrays.

A collection of 9 standardized probes and tracking tools to monitor student growth in number sense and fractions.

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.

The final week combines all themes for an epic wrap-up. Problems range from enchanted forests to backyard science experiments.

Week 5 returns to everyday life with neighborhood-focused problems, including community garden planning, lemonade stands, and local park events.

Week 4 explores seasonal and holiday scenarios. Students solve problems related to garden planting, snow day preparations, and holiday gift giving.

Week 3 dives into a world of fantasy and adventure. Problems involve dragon hoards, wizard potion ingredients, and knightly armor sets.

Week 2 features animal-themed two-step word problems. Students calculate zoo animal diets, pet store inventories, and wildlife observations.

Week 1 focuses on two-step word problems set in everyday school and home environments. Students solve problems involving lunchroom supplies, library books, and household chores.

Provides a comprehensive visual reference for 4th-grade place value concepts, extending up to the millions place.

Assesses 2nd-grade proficiency in basic addition and subtraction operations, including word problems and regrouping.

Deepens 5th-grade students' understanding of fraction equivalence through visual modeling and symbolic manipulation.

Students master number patterns and skip counting to build the Grand Staircase of the Pattern Palace, identifying rules and predicting future terms.

Students are introduced to the Pattern Palace and their roles as architects, learning the fundamental rules of repeating and growing patterns in both shapes and numbers.

A final project-based assessment where students demonstrate their ability to build arrays, identify even/odd groups, and write repeated addition equations.

Students practice skip counting by 2s, 5s, and 10s as a fast-track method for counting large groups of building supplies.

Students explore even and odd numbers by pairing objects and building 'towers of two' to see if any blocks are left over.

Students build and analyze rectangular arrays (up to 5x5) using building blocks, connecting the rows and columns to repeated addition.

Students use manipulatives to create equal groups and write repeated addition equations to find the total, laying the conceptual groundwork for multiplication.

Applying all architectural math skills to solve complex, multi-step word problems involving sums and differences up to 1,000.

Deconstructing three-digit numbers through subtraction, including strategies for regrouping across place values.