# Number Resources

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This document, prepared by the Ontario Ministry of Education, compares in table form the key changes between the 2005 and the 2020 elementary mathematics curriculum.

This curriculum policy replaces The Ontario Curriculum, Grades 1-8: Mathematics, 2005. Beginning in September 2020, all mathematics programs for Grades 1 to 8 will be based on the expectations outlined in this curriculum policy.

In this lesson, children learn to make a mathematical model in order to predict the number of candies required for a candy bag. Major foci include determining important questions that need answering, missing information that is needed to solve the problem, and making assumptions about missing information.

In this lesson, students learn to divide different shapes and objects into equal parts to share, use math language like halves and fourths to describe equal parts, and understand that more equal shares creates smaller shares

The class is going on an imaginary visit to the zoo. During the visit, the class is going to feed some of the animals. The class has a limited budget so they can only buy a limited amount of snacks. They can only feed 2 giraffes, 4 lions, 2 chimpanzees, 4 zebras and 2 elephants. Students work in pairs or small groups to decide how to share food fairly among each type of animal making sure to respect the snack preferences of the animals.

The students use their imagination to pretend that they are going to the zoo for a day to work with the zookeepers as assistants. One of their jobs is to divide a specific amount of food equally among the 2 polar bears. They also have to divide the same amounts among 4 grizzly bears and among 10 black bears.

In this lesson, students use coding devices to do plugged sequential coding to create number sentences while using a 100's chart.

In this lesson, students will read a story and help the squirrel to find, share and store acorns in the forest, and to problem solve using coding skills.

In this lesson, students will calculate amounts of up to $100 for recess equipment.

In this lesson, students will find several ways to represent $ 200 in order to decide what currency they would like to receive from the city for their recycling materials.

In this lesson, students will work on the 2 first components of the math modeling process. They will determine how to organize the math manipulatives area for a grade 2 classroom.

In this lesson, students learn to understand the first 2 components of mathematical modeling. They develop a spatial plan for the grade 2 event in the schoolyard.

Split, the squirrel, shares his seeds - in this lesson, students learn to create equivalent sharing situations of one-third and two-sixths between 3 squirrels.

In this lesson, Wooly has her Grandma knit sweaters with different combinations of coloured stripes on sweaters to represent one half, two-fourths, one third and two-sixths (surface model). She then knits her scarves with pompoms having the same fraction quantities as the sweaters (set model). The equivalent fractions are then compared for each model. Students represent all of these fractions with different manipulatives. The photos from the centers can then be used for different card games.

In this lesson, students represent multiplication as repeated addition of equal groups, including groups of one-half and one-fourth, and determine the amound of clay needed to buy for the class to create art. They use various tools and drawings to solve the problem.

In this lesson, students represent and solve problems of equitably sharing a whole of up to 10 dried fish among a number of people. The results are mixed numbers. Links to aboriginal activities are presented as a context.

In this lesson students will have opportunities to estimate change using coins as well as debug code. It explores financial literacy as well as coding.

In this lesson students work on rounding to the nearest 5 and 10 and make change for amounts under a dollar. It explores how pennies are used in cash and virtual transactions and provides an opportunity to discuss the role of the penny.The Mising Penny is the first of two lessons. The companion lesson, Making Change, is the second lesson in this duo. Making Change is found in the Coding lessons.

In this lesson, students explore the world of fractions and equivalent fractions through a bicycle race using a three-act task. It provides an opportunity to represent fractions using a linear model. Some games are also included to help students consolidate the concept of fractions using different representations.

This lesson provides opportunities to work with equivalent fractions while solving fair share problems. Students are encouraged to explore a range of fractional units while reinforcing the importance of equal parts and using multiple ways to name or represent fractions.

In this lesson, students will have the opportunity to create a thank you card while applying fraction concepts. They will first have to divide their card using halves, thirds and fourths. Then they will determine the number of stickers to use to decorate their card as a fraction of the set of stickers..

Use estimation strategies and operations to determine the best price for bundled items by finding unit rate.

This lesson is the first of two. Students begin the first three steps of the mathematical modeling process: understanding the situation, analyzing the situation, and creating a mathematical model. From an authentic activity, students work together to come up with a simple model and collect the data. This lesson will be followed by a second lesson called Let's Serve Breakfast! where students continue the mathematical modeling process.

Create drawings to understand the meaning of the numerator and denominator in fractions written in standard notation.

In this lesson, students will learn how to recall and demonstrate multiplication and division facts up to 12 x 12 by using and manipulating existing code. They will apply this code to a spreadsheet to create original artwork.

In this lesson, using Scratch, students will learn to understand and represent patterns, relating them to equivalent decimals and fractions so they understand how the size of the whole affects the size of a fraction. They will also learn to make predictions about patterns.

In this lesson, students will begin to think about budgets. Teachers can choose between 2 scenarios (raising money for a trip, or earning money from a job like babysitting) to explore. Students will consider why they may want to earn money, how they might earn it, and prioritize how it might be spent.

In this lesson, students explore the interrelationship between fractions, decimals and percentages. Students navigate an online interactive Google Slide that allows to learn and explore all while using visuals and digital manipulatives.

In an unplugged environment, students will be learning to understand the movement of objects on the Cartesian plane through the graphing of ordered pairs (x, y) and using combinations of translations and reflections to transform objects. This lesson can be used in advance of Lesson 1, "Coding Transformations - Unplugged!"

In an unplugged environment, students will be coding transformations--combinations of translations and reflections--on the Cartesian plane by writing and executing pseudocode.

Creating a pseudocode for the actions to determine which integer is greater than another, students then identify the Scratch coding blocks that will carry out these actions. They can remix a sample Scratch project or programme their own from a starter Scratch project. The use of a number line in the coding projects gives a visual representation to the integers. Note: For teachers not familiar with Scratch coding, instructions are included to assist your teaching of these lessons.

Creating a pseudocode for the actions to determine the actions used when using an "input/output machine" students then identify the Scratch coding blocks that will carry out these actions. They can remix a sample Scratch project or programme their own from a starter Scratch project. This lesson and Which is Greater? focus on developing your students' understanding of positive and negative integers. Note: For teachers not familiar with Scratch coding, instructions are included to assist your teaching of these lessons.

In this lesson, students will code using Google Sheets or any spreadsheet program. Students will be creating a budget to help plan for a financial goal while considering earnings and expenses.

Through the use of pseudocode, students will be learning to decompose their mathematical thinking regarding the concepts of prime and composite numbers and algorithms; identify the factors of composite numbers as a series of actions; connect those actions to block coding, and in doing so, reinforce their computational thinking. Note: Consider using coding lesson after the students understand the concept of factoring. For teachers not familiar with Scratch coding, instructions are included to assist your teaching of these lessons.

In this lesson, students will be learning to compare different methods of payment--identifying advantages and disadvantages--and the best ways to use them. Students will also analyze and identify how interest rates are applied to various methods of payment in order to make the best financial decision possible when making a purchase.

Students will use visual and concrete models, including number lines, to further develop their reasoning about how fractions can be combined through addition.

A lesson in which students get to create a prototype for a restaurant ordering app. Using different conditional and operations blocs in Scratch, students get to work on expectations in the Numbers strand and calculate the total cost of a meal. Various scenarios (with different items and different quantities) allow for differentiation and various levels of scaffolding.

In this coding lesson using Scratch, students can create a calculator in which they can compare two different discount structures. Depending on the number of items bought, the calculator will be able to provide savings from either choosing a 20% discount, or a $ 20 discount. Students get to utilise conditions and operations blocs in this activity.

In this lesson, students will learn about the value of creating a budget, different types of savings accounts and the implications interest rates can have on saving money. Following that, students will use money earned from a part-time job and saved over time to investigate various mobile phone plans to determine which one best suits their needs.

In this lessons students will create a model then collect and organize data in order to determine the impact of a school board's handwashing policy. Students will use their model to make predictions, then test those predictions by playing out the handwashing scenario in real-life. In the end, students will present their opinion on the policy, using mathematical arguements based on information provided by their models.

In this lesson, students work with a fictional pizza recipe to multiply and divide fractions by whole numbers and fractions. Students will then use their understanding of multiplying and dividing fractions by fractions in order to create and solve their own problems.

In this lesson, students will increase their knowledge of the Pythagorean Theorem while working on their coding skills.

Do your students want to become YouTube stars? Students will learn how to Monetize a YouTube Channel and use coding to predict the revenue a YouTube video can generate.

In this lesson, student will investigate different aspects of how interest is calculated, charged and earned. Students will compare scenarios to understand the impact of interest.

Are fractions properly used in everyday publicity? Using publicity posters, students will explore fractions and spatial sense.

A summary of Virtual Manipulatives for Fractions that are available, including links, and considerations for their usage.