MATHurdays - math so fun we do it on Saturdays.

Finally…a structure for 1 hour math blocks that include

  • Building Community & Relationships

  • Math Routines

  • Math Task

  • Rich Mathematical Discussions

Interested in learning how to cultivate school communities by giving the same task to multiple grades? Check out this article about how I supported schools in implementing many of these tasks.

Download: Cultivating School Communities with Vertical Mathematics Tasks

Task: Chichen Itza Problem

Task: Chichen Itza Problem

Quadratic Growing Pattern 3/28/2020

How do primary students think about quadratic functions? Why do we need to teach this in Kindergarten through high school? How to students build on prior knowledge and increase algebraic reasoning?
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Clothesline Math Task: Space Stations Problem

Routine: Clothesline Math
Task: Space Stations Problem

Linear Growing Patterns 4/4/2020

How do students think about growing patterns from Kindergarten through high school? What algebraic reasoning is needed in elementary school?
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Which One Doesn’t Belong (WODB) Task: Triangular Scones Problem

Routine: Which One Doesn’t Belong (WODB)
Task: Triangular Scones Problem

Classifying Triangles 4/11/2020

How do you classify shapes? Size? Angles? Sides? Why is it important to build on developmental stages of understanding?
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Peri-Area Task: The Hockey Rink Problem

Routine: Peri-Area
Task: The Hockey Rink Problem

Area & Perimeter 4/18/2020
How do students understand area and perimeter from Kindergarten through Calculus? Why is it important to build on developmental stages of understanding?
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Completed Slides
Recording of PD Session

Routine: Choral Counting Task: Goldilocks and the 3 Bears - Cookie remix

Routine: Choral Counting
Task: Goldilocks and the 3 Bears - Cookie remix

Combinatorics 4/25/2020

How do Kindergartners think about permutations and combinations? How does that thinking continue through middle and high school?
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Completed Slides
Recording of PD Session

Routine: Proportionate Pokemon Task: Sharing M&M’s

Routine: Proportionate Pokemon
Task: Sharing M&M’s

Proportional Reasoning & Fractions 5/1/2020

What is the whole? How do children think about fractions as the whole changes?
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Splat Task: Hopscotch Problem

Routine: Splat
Task: Hopscotch Problem

Patterns, Multiples & Proportions 5/9/2020

How do we use multiplication, division, and proportional reasoning to examine patterns from Kindergarten through Algebra 1?
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Completed Slides
Recording of PD Session

Routine: Rounding on the Number Wave Task: Ranking Reflexes

Routine: Rounding on the Number Wave
Task: Ranking Reflexes

Rounding, Place Value & Data Collection 5/16/2020

Why do we round? Why do we choose different place values? What number sense is needed to round?
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Completed Slides
Recording of PD Session

Routine: Same or Different Task: Caterpillar Problem

Routine: Same or Different
Task: Caterpillar Problem

Rate of Change & Proportional Reasoning 5/23/2020

Why do we round? Why do we choose different place values? What number sense is needed to round?
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Completed Slides
Recording of PD Session


Routine: Bizz Buzz Task: Cicada problem

Routine: Bizz Buzz
Task: Cicada problem

Routine: Collaborative Estimation Task: Football player problem

Routine: Collaborative Estimation
Task: Football player problem

Routine: Find & Photo Task: Tupperware Problem

Routine: Find & Photo
Task: Tupperware Problem

Multiples, Factors & Primes 5/31/2020

How often do different patterns of multiples “meet up?” Why do cicadas emerge on prime number intervals? How do engineers apply this to gear design, and how did Beethoven use this knowledge to “see” the music. Hint: it’s a task for elementary kids as well as trigonometry.
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Recording of PD Session

Measures of Center & Data displays 6/6/2020

When should you include and exclude 0 in your data set? Should the mode be an outlier? How do students display data as early as Kindergarten and why is that important to their development through HS statistics?
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Completed Slides
Recording of PD Session

Ratios and Common Numerators 6/13/2020

When should you write a ratio as part:part or part:whole? When should you find common numerators? How can math modeling support learners as they explore these topics?
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Infographics Task: Flint Water Problem

Routine: Infographics
Task: Flint Water Problem

Routine: Lucky Number Task: Fishy Situation

Routine: Lucky Number
Task: Fishy Situation

Routine: Slow Reveal Graphs Task: Ski Lift Problem

Routine: Slow Reveal Graphs
Task: Ski Lift Problem

Ratios, Unit Rates, and Scaling up and down 6/20/2020

How do students use and interpret ratios? When are unit rates used in the real world? How do students think flexibly through part:part models?
Blank Slide Templates
Completed Slides
Recording of PD Session

Probability and Data Analysis 6/27/2020

How do students grapple with large and small sample sizes in order to determine number of fish in a lake?

Blank Slide Templates
Completed Slides
Recording of PD Session

Linear functions and proportional reasoning 7/11/2020

How do students use linear equations to determine a plan that is proportionate to similar plans?

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Completed Slides
Recording of PD Session


Routine: Always, Sometimes, Never Task: Lemonade Problem

Routine: Always, Sometimes, Never
Task: Lemonade Problem

Proportional Reasoning 7/25/2020

How do students use direct and inverse variation to convert recipes that use 4 changing variables?
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Completed Slides
Recording of PD Session

Routine: Find it Task: Packing books in a box

Routine: Find it
Task: Packing books in a box

Using Decimals and Units with Volume 8/1/2020

How do students use units when measuring volume? When is it centimeters cubes or simply the unit books? Learn how to use decimals as part of many lessons and not an entire unit.
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Completed Slides
Recording of PD Session

Routine: Notice & Wonder Task: Family Tree

Routine: Notice & Wonder
Task: Family Tree

Recursive and exponential functions 8/15/2020

Using tree diagrams to understand how to extend patterns from recursive models to exponential functions.
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Completed Slides
Recording of PD Session


Routine: What comes next? Task: New Tetris Shape

Routine: What comes next?
Task: New Tetris Shape

Area and Perimeter 9/12/2020

Students decompose irregular shapes and determine relationships between area and perimeter.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Contemplate then Calculate (CthenC) Task: Frisbee Golf Design

Routine: Contemplate then Calculate (CthenC)
Task: Frisbee Golf Design

Mathematical Modeling 9/19/2020

Students explore chunking an image to visually model mathematical ideas that lead to scalability.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: What comes next? Task: Hip Hip Array!

Routine: What comes next?
Task: Hip Hip Array!

Multiplication 9/26/2020

Students explore multiplication through arrays by planting a garden. Discussion focuses on rows and columns, arrays, then extends to finding fractional amounts and decimals.
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Recording of PD Session


Routine: Numberless Word Problems Task: Watch for motorcycles

Routine: Numberless Word Problems
Task: Watch for motorcycles

System of Equations 10/3/20
Students use trial and error, division, and visual models to explore systems of equations from elementary grades through Algebra 1.
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Completed Slides
Recording of PD Session

Routine: Before and After Patterns Task: Changing Seasons

Routine: Before and After Patterns
Task: Changing Seasons

Sine Functions 10/10/20
Students use graphs to display temperatures of each month. Accessible to 4th graders, this task explores the reason why sine waves have more data points near the min and max.
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Recording of PD Session

Routine: Would You Rather Task: Pouring Paint

Routine: Would You Rather
Task: Pouring Paint

Fraction comparison and addition 10/17/20
Students compare fractions using benchmarks, common numerator/denominator and equivalent fractions as strategies to determine two fractions that sum less than a whole.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Open Middle Task: Packages

Routine: Open Middle
Task: Packages

Relating area to volume 10/24/20
Students explore 2D and 3D models to design packaging instructions to fill a constant volume while constricted by dimensions.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Esti-Mysteries Task: Three Hidden Rectangles

Routine: Esti-Mysteries
Task: Three Hidden Rectangles

Decomposing Area 10/31/20
Students explore all possible rectangular arrays within an irregular shape.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Notice & Wonder Task: Multiplication Grid

Routine: Notice & Wonder
Task: Multiplication Grid

Multiplying Rational Numbers 11/7/20
Students explore the partial products of multipliers (both whole numbers and rational numbers) to try and find a product that is created between two whole numbers.
Blank Slide Templates
Completed Slides
Recording of PD Session - (Note: I forgot to record my mic)


Routine: Reasoning up & down Task: Thanksgiving Dinner

Routine: Reasoning up & down
Task: Thanksgiving Dinner

Proportional Reasoning 11/14/20
Students determine how to compare two thanksgiving meal situations. With a plethora of data that the students could compare, this is a great opening task for a unit. As the unit progresses, you can be more specific with the problem to be solved.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Number Strings Task: Prime Line Workshop

Routine: Number Strings
Task: Prime Line Workshop

Multiples & Primes 11/21/20
Students explore an app that designates a unique colorful chip to every number. They use their knowledge of multiples and primes to create a rule for the colors and explore a scavenger hunt of rich questions.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Choral Counting Task: Making Money

Routine: Choral Counting
Task: Making Money

Counting Coins 11/28/20
Students explore multiple ways of making $1.00 and then determine all possible ways of making $1.00 with only coins
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Completed Slides
Recording of PD Session


Routine: Which One Doesn’t Belong Task: Calendar Cubes

Routine: Which One Doesn’t Belong
Task: Calendar Cubes

3D Geometry - Solids and Nets 12/12/20
Students determine how many cubes are needed by arranging numbers on cube nets.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Would You Rather Task: Max’s Dog Food

Routine: Would You Rather
Task: Max’s Dog Food

Dividing Fractions 12/19/20
Students determine how to divide fractions using multiple representations in order to determine the left over amount of dog food.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Same but Different Task: Not quite a half

Routine: Same but Different
Task: Not quite a half

Fractional Understanding 1/9/21
Students create fractions that are close to 1/2 without going over 1/2 to learn the patterns found in numerators and denominators.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Convince me that Task: Dividing Blueberries

Routine: Convince me that
Task: Dividing Blueberries

Dividing Fractions 1/16/21
Students explore how to divide fractions using multiple models: area, set, measurement, and traditional. Emphasis is redefining the whole in order to determine the leftover fractional amount.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Slow Reveal Graphs Task: Will we stop growing

Routine: Slow Reveal Graphs
Task: Will we stop growing

Linear Functions 1/30/21
Students explore 5 representations of a linear function (picture, table, graph, equation, and story problem) as they relate it to a favorite picture book about different ways that grass grows.
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Completed Slides
Recording of PD Session

Routine: Connecting Representations Rich Task: Where is the coordinate?

Routine: Connecting Representations
Rich Task: Where is the coordinate?

Graphing on the coordinate plane 2/6/21
Students discover important characteristics about a coordinate plane when graphing including, scale, y-intercept, order of plotting, and where to plot by comparing different treasure maps.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Estimation180 Task: Isometric Areas

Routine: Estimation180
Task: Isometric Areas

Area, Perimeter & Volume 2/13/21
Students explore why and how we calculate area by exploring isometric triangles.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Number Talks Task: Coffee & Donuts

Routine: Number Talks
Task: Coffee & Donuts

Decimal Operations 2/20/21
Students explore adding, subtracting, multiplying and dividing decimals to determine the best situation.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Would you Rather Rich Task: People & Populations

Routine: Would you Rather
Rich Task: People & Populations

Decimal Operations 2/27/21
Students explore adding, subtracting, multiplying and dividing decimals to determine the best situation.
Blank Slide Templates
Completed Slides
Recording of PD


Routine: My Favorite Mistake Task: Gears!

Routine: My Favorite Mistake
Task: Gears!

Prime and Composite Numbers 3/6/21
Students explore the wear and tear on gears and why engineers use prime number of teeth to make the best gears.
Blank Slide Templates
Completed Slides
Recording of PD Session

Game: Fraction Tracks Task: Sharing Pizza

Game: Fraction Tracks
Task: Sharing Pizza

Fraction Operations with Unlike Denominators 3/20/21
Students explore adding, subtracting, multiplying and dividing fractions in order to make fair situations.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine:  Would You Rather Task: Finding Pythagoras

Routine: Would You Rather
Task: Finding Pythagoras

Pythagorean Theorem 3/27/21
Students explore triangles to discover not only the Pythagorean theorem, but how the theorem can be used for acute and obtuse triangles.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Estimate & Order Rich Task: Wealth of Nations

Routine: Estimate & Order
Rich Task: Wealth of Nations

Mean, Median, Mode & Range 4/3/21
Students explore the MEANingful ways of interpreting and calculating mean, median, mode and range. SOCIAL JUSTICE STANDPOINT
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Completed Slides
Recording of PD Session

Routine: What could this be? Rich Task: Eggspectation

Routine: What could this be?
Rich Task: Eggspectation

Place Value (addition & subtraction) 4/10/21
Students explore the history of mathematics and how different cultures used place value.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Convince Me That Task: Younike’s Boutique

Routine: Convince Me That
Task: Younike’s Boutique

Partitive vs. Quotative Division Models 4/17/21
Students explore two division models and use virtual manipulatives to make sense of division.
Blank Slide Templates
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Recording of PD Session


Routine: Clothesline Math Rich Task: Stan the Ice Cream Man

Routine: Clothesline Math
Rich Task: Stan the Ice Cream Man

Routine: Unit Chat Rich Task: Hot Apple Cider

Routine: Unit Chat
Rich Task: Hot Apple Cider

Routine: Always, Sometimes, Never Rich Task: Plinko

Routine: Always, Sometimes, Never
Rich Task: Plinko

Combinations, Permutations & Fundamental Counting Principle 4/24/21
Students explore an open ended problem to determine how to organize lists or create diagrams to find the total combinations of ice cream.
Blank Slide Templates
Completed Slides
Recording of PD Session

Fraction Operations to Rename the Whole 5/1/21
Students navigate between two different situations to rename the whole as they add, subtract, multiply, and divide fractions.
Blank Slide Templates
Completed Slides
Recording of PD Session

Probability & Events 5/8/21
Students explore the number of events and the probability of winning a game to determine appropriate prizes for the game board.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Which One Doesn’t Belong Task: Paper Folding

Routine: Which One Doesn’t Belong
Task: Paper Folding

Algebra & Ratios 5/22/21
Students explore the paper folding problem to determine algebraic relationships between the creases, intersections, and other ratios of the folds.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: choral Counting (finding patterns) Task: Bowling Pins

Routine: choral Counting (finding patterns)
Task: Bowling Pins

Algebraic Patterns 5/29/21
Students explore a growing pattern to determine the number of bowling pins for any situation.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Notice & Wonder Task: Pi Day Pies

Routine: Notice & Wonder
Task: Pi Day Pies

Fraction Identification & Operations 6/5/21
Students explore non-friendly fractional numbers to find fractional amounts of large set quantities.
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Recording of PD Session


Routine: Visual Patterns Rich Task: What’s Next?

Routine: Visual Patterns
Rich Task: What’s Next?

Decomposing and Visualizing Algebra 6/12/21
Students growing patterns to understand how to decompose visuals that describe algebraic expressions.
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Recording of PD Session

Routine: Between2Numbers Rich Task: Measuring a Puddle

Routine: Between2Numbers
Rich Task: Measuring a Puddle

Relative Measurement 6/19/21
Students explore different ways to measure a puddle using non-standard and standard measurement tools.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Get Riddles Rich Task: Are Sperm Whales Smart?

Routine: Get Riddles
Rich Task: Are Sperm Whales Smart?

Proportional Reasoning 6/26/21
Students explore different ways to compare the size of animals to the size of their brains to determine how smart they are.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Caption This Rich Task: Measuring Pokémon

Routine: Caption This
Rich Task: Measuring Pokémon

Measuring in standard and metric 7/10/21
Students explore various Pokémon and resize them to their correct measurements, then convert to metric using visual aids.
Blank Slide Templates
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Recording of PD Session

Routine: All of these, Some of these Rich Task: Square tiles in the math museum

Routine: All of these, Some of these
Rich Task: Square tiles in the math museum

Area of squares, rectangles, triangles & Pythagorean theorem 7/17/21
Students explore various squares and tilted squares as they develop strategies for finding the area of squares, rectangles and triangles. This leads to the Pythagorean theorem as students prove some squares are impossible.
Blank Slide Templates
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Recording of PD Session

Routine: Numberless Word Problems Rich Task: Farmer Bob

Routine: Numberless Word Problems
Rich Task: Farmer Bob

Word Problems in Primary Grades 7/24/21
Student explore sums of 18 by skip counting by 2’s and 4’s.
Blank Slide Templates
Completed Slides
Recording of PD Session


Routine: Clothesline Math Task: Olympic Underdog

Routine: Clothesline Math
Task: Olympic Underdog

Fractional Reasoning for grades 3-8
8/14/21
Students explore Olympic data, specifically number of metals per country vs. the countries population.
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Recording of PD Session

Routine: Cube Conversations Rich Task: Board Game Design

Routine: Cube Conversations
Rich Task: Board Game Design

Fractions in Middle Grades 8/28/21
Students explore fractions, percentages, and ratios in order to create a board game.
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Completed Slides
Recording of PD Session

Routine: Convince me that Rich Task: Sharing Sandwiches

Routine: Convince me that
Rich Task: Sharing Sandwiches

Fractions in Elementary Grades 9/11/21
Students investigate fair ways to divide sandwiches.
Blank Slide Templates
Completed Slides
Recording of PD


Special Session: Mathigon in Middle Grades 9/25/21
David Poras shows us some great tools and tips for teaching math in middle school.
Completed Slides
Recording of PD Session

Routine: All of these, None of these Rich Task: Rectangle Game

Routine: All of these, None of these
Rich Task: Rectangle Game

Prime & Composite Numbers 10/2/21
Students explore a tasked based on the rectangle game. They investigate the many factors of a number to find the best and worst numbers on the gameboard.
Blank Slide Templates
Completed Slides
Recording of PD Session

Routine: Notice & Wonder Rich Task: Table Arrangements

Routine: Notice & Wonder
Rich Task: Table Arrangements

Area & Perimeter 10/9/21
Students explore ways to maximize and minimize perimeter while keeping area constant.
Blank Slide Templates
Completed Slides
Recording of PD Session


MATHurdays: Math so fun that we do it on Saturdays