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Math Vidoes

# Third grade math

Below you can find a all of the skills that children learn in Mondiso Math – third grade! These skills are organized into missions, and you can click any mission title name to view many more details of the activity.

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Mission 1 Weights and Liquids

#### 1.1 Measure in Metrics

**Subject**

See how you measure nails!

**Description**

Demo about measurement in cm and mm.

**Objective**

Understand the division into m, cm, and mm as well as the correlation and the difference between the three.

#### 1.2 Sorting Size

**Subject**

Help Pedro stack the boxes correctly.

**Description**

Boxes with numbers have landed in random order. Now the student must stack the boxes numerically.

**Objective**

The student practices their knowledge of the number sequence, thus strengthening their perception of the numbers as ordinal numbers. Numbers up to 99 are used.

#### 1.3 Circles and Diameter

**Subject**

See how you figure out the size of a wheel.

**Description**

Demo about circles and measurement of diameter

**Objective**

The student learns to calculate the diameter of circles.

#### 1.4 Measure Circles and Wheels

**Subject**

Go exploring on Mondiso with a ruler.

**Description**

The student explores a rich picture with a ruler. Along the way, the student is encouraged to measure certain objects and to answer questions.

**Objective**

#### 1.5 Print and Measure

**Subject**

Here you have to print out and measure.

**Description**

The student prints out a 9X11 piece of paper and performs measurements on the page in order to answer the snail's questions.

**Objective**

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Mission 2 Multiplication

#### 2.1 Multiplication

**Subject**

Would you like to see how Max helps von Scrap count how much junk has fallen from the sky?

**Description**

Demo about multiplication and the multiplication sign

**Objective**

Understanding multiplication and the multiplication sign

#### 2.2 Junk Multiplication

**Subject**

Help von Scrap multiply junk.

**Description**

By filling a wheelbarrow with junk, the student learns the relationship between filling up something and addition.

**Objective**

The goal is to teach the student multiplication, and to give them an understanding of the operators*and =.

#### 2.3 Monster Multiplication Race

**Subject**

Take a ride in Miss Smokey.

**Description**

None

**Objective**

None

#### 2.4 Multiplication Tricks

**Subject**

**Description**

Demo about how tables can be used for multiplication.

**Objective**

Multiplication tricks using tables

#### 2.5 Monster Number Sheet

**Subject**

Find the correct numbers on the number sheet.

**Description**

The student uses various tables to find even and odd numbers, respectively, on the number sheet.

**Objective**

None

#### 2.6 Write Multiplication Problems

**Subject**

Write multiplication problems on the pocket calculator.

**Description**

The student must write an addition, subtraction, division, and a multiplication problem based on the information given at each level. The pocket calculator solves the problem.

**Objective**

The student learns to discern the important information from verbal presentations of math problems, and uses this information to write correct multiplication problems.

#### 2.7 Multiply With Colors

**Subject**

Multiply and color!

**Description**

None

**Objective**

None

#### 2.8 20 Multiplication Problems

**Subject**

**Description**

Multiplication with the numbers one through six.

**Objective**

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Mission 3 Patterns and Mirrors

#### 3.1 Patterns

**Subject**

See Felix explain patterns to Ruth.

**Description**

Demo explaining what a pattern a is

**Objective**

Understand what patterns are

#### 3.2 Continue the Pattern

**Subject**

Come along and draw some beautiful patterns.

**Description**

The student works on expanding various patterns.

**Objective**

Understand how patterns expand, and the importance of using exact measurements

#### 3.3 When is Something a Pattern?

**Subject**

Do you understand patterns?

**Description**

The student learns about patterns through a conversation where they have to choose the correct answer.

**Objective**

None

#### 3.4 Patterns and Mirror Images

**Subject**

Learn about patterns and mirror images!

**Description**

None

**Objective**

#### 3.5 Draw Mirror Patterns

**Subject**

**Description**

None

**Objective**

Symmetry

#### 3.6 Help with the Sheets

**Subject**

**Description**

None

**Objective**

None

#### 3.7 Print a Monster Pattern

**Subject**

Print a pattern and color it in!

**Description**

The student or the teacher can print out a sheet with patterns, which the student can color in.

**Objective**

None

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Mission 4 Division

#### 4.1 Pedro's Fruits

**Subject**

Be there when Pedro shows us how to divide.

**Description**

A demo, which shows how various pieces of fruit are divided between x number of monsters. Thus division is introduced.

**Objective**

Learn about the idea of dividing into parts

#### 4.2 Divide Up the Pile

**Subject**

Now you must divide up the piles between the monsters.

**Description**

Piles are divided into x parts.

**Objective**

Learning to divide using piles

#### 4.3 Multiplication and Division on the Scale

**Subject**

Can you multiply and divide on the scale?

**Description**

EXERCISE IN THREE LEVELS BASED UPON THE SAME MATH PROBLEM: 1) Simple multiplication problem, which is explained 2) Multiplication problems where one factor is missing. 3) Division problem

**Objective**

Understand which numbers can be divided in x number of piles

#### 4.4 Write Division Problems

**Subject**

Show that you know how to write division problems.

**Description**

The student must enter the correct division problem on the pocket calculator based on the information provided.

**Objective**

The student learns to discern the important information from verbal presentations of math problems, and uses this information to write correct division problems.

#### 4.5 Monster Division Race

**Subject**

Go for a ride on Shower Balloon

**Description**

The student solves division problems.

**Objective**

None

#### 4.6 Divide with Colors

**Subject**

Divide and color!

**Description**

None

**Objective**

None

#### 4.7 Twelve Division Problems

**Subject**

**Description**

Division problems.

**Objective**

#### 4.8 Divide for Five Minutes

**Subject**

**Description**

Division problems.

**Objective**

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Mission 5 Multiplication 2

#### 5.1 Adding Zeros

**Subject**

Learn about pieces of fruit and multiplication tricks!

**Description**

Demo about multiplying by 10 and 100

**Objective**

Learn the trick to multiplying by 10 and 100

#### 5.2 Multiplication on the Scale

**Subject**

Show that you know how to multiply using the scale!

**Description**

Exercises in multiplying by 10, and expanded in the later levels to include multiplication problems up to 10 times 10 (for instance 9 times 8)

**Objective**

Learn the trick to multiplying by 10

#### 5.3 Multiply Using the Pocket Calculator

**Subject**

The pocket calculator needs some multiplication problems.

**Description**

The student must write a multiplication problem based on the information given at each level. The pocket calculator solves the problem.

**Objective**

The student learns to discern the important information from verbal presentations of math problems, and then uses this information to write correct multiplication problems.

#### 5.4 Shopping in the Junk Cellar

**Subject**

Come on down and shop at von Scrap's.

**Description**

From various price tags, the student figures out what it costs to buy the junk in the cellar.

**Objective**

Learn to multiply and add in connection with everyday situations like shopping.

#### 5.5 Fill In the Tables

**Subject**

Show that you know all about tables!

**Description**

The student fills in the missing numbers in the tables.

**Objective**

Learn the smaller tables.

#### 5.6 Monster Multiplication Race

**Subject**

Go for a ride on Shower Growler.

**Description**

None

**Objective**

None

#### 5.7 Twenty Multiplication Problems

**Subject**

**Description**

Multiplication by the numbers one through nine.

**Objective**

#### 5.8 Multiply for Five Minutes

**Subject**

**Description**

Multiplication by the numbers one through nine.

**Objective**

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Mission 6 Sorting and Playing Games

#### 6.1 Manfred's Food Diagram

**Subject**

Learn about diagrams and Manfred's eating habits!

**Description**

Demo about diagrams

**Objective**

Getting to know simple diagrams

#### 6.2 Meal Chart

**Subject**

Show that you are a shark at reading charts and diagrams!

**Description**

The student learns to read charts and diagrams through a conversation where they have to choose the correct answer. This exercise is a precursor to understanding the use of diagrams.

**Objective**

By putting charts and diagrams in an everyday context, the student learns their usefulness.

#### 6.3 Go Ahead and Play!

**Subject**

Come play a game, if there are two of you at the computer.

**Description**

The student plays games with one other player and develops their intuition with regard to probability and fair play.

**Objective**

None

#### 6.4 Print and Play

**Subject**

Print and play, but there has to be two of you.

**Description**

The student prints out the game board for a probability game. Using real dice is advantageous, but the program's built in dice can also be used.

**Objective**

None

#### 6.5 Play it

**Subject**

This game is for two players.

**Description**

None

**Objective**

None

#### 6.6 Randomness - Is it Random?

**Subject**

Are you in charge of randomness?

**Description**

By answering questions about randomness, which demand an understanding of this concept, the student concretizes an otherwise vague concept.

**Objective**

By considering and choosing one answer among many, the student develops their communication and reasoning skills.

###
Mission 7 Area

#### 7.1 Area

**Subject**

See why it is good to be able to figure out areas in case of junk rain!

**Description**

Ruth needs to cover her gardens, and Felix helps her figure out their area.

**Objective**

Understand m in the context of area

#### 7.2 Find the Area

**Subject**

**Description**

Area and circumference of various gardens placed on a grid.

**Objective**

The understanding of area and circumference is increased and tools/methods for finding the area are developed.

#### 7.3 Sorting Area

**Subject**

Sort shapes according to their area.

**Description**

None

**Objective**

Comprehend the area as a phenomenon and learn how to measure it

#### 7.4 Print and Solve

**Subject**

Print and solve!

**Description**

The student prints out a sheet with rectangles. The student must find the area of the rectangles.

**Objective**

Learn to find the area

#### 7.5 Monster Multiplication Race

**Subject**

Now you must multiply and drive fast in the Wroom-Wroomer.

**Description**

None

**Objective**

None

#### 7.6 Gardens, Areas, and Circumferences

**Subject**

Can you find the area and circumference?

**Description**

The student learns about area and circumference through a conversation where they have to choose the correct answer.

**Objective**

Using area and circumference in practice

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Mission 8 Arithmetic

#### 8.1 Eat with Manfred

**Subject**

See how Manfred figures out how much he is allowed to eat...

**Description**

Demo about subtraction on paper - also including regrouping.

**Objective**

Subtracting large numbers from one another

#### 8.2 Subtraction on the Pad

**Subject**

Show that you know how to write and solve math problems!

**Description**

**Objective**

Subtraction with 2-digit numbers with no regrouping.

#### 8.3 Shopping in the Junk Cellar

**Subject**

Come on down and shop at von Scrap's.

**Description**

From various price tags, the student figures out what it costs to buy the junk in the cellar.

**Objective**

Learn to add in connection with everyday situations like shopping.

#### 8.4 Addition and Subtraction

**Subject**

Give it gas with addition and subtraction on the number sheet!

**Description**

The student adds and subtracts on the number sheet while counting ones and tens.

**Objective**

None

#### 8.5 Monster Solving Race

**Subject**

Try Miss Smokey, but remember to go in the right direction.

**Description**

The student has to go in the right direction, and must use addition in order to do so.

**Objective**

The student practices mental arithmetic.

#### 8.6 Help the Pocket Calculator

**Subject**

Give math problems to the pocket calculator.

**Description**

The student must write an addition, subtraction, division, and a multiplication problem based on the information given at each level. The pocket calculator solves the problem.

**Objective**

The student learns to discern the important information from verbal presentations of math problems, and then uses this information to write correct math problems.

#### 8.7 Solve with Colors

**Subject**

Divide and color!

**Description**

None

**Objective**

None

#### 8.8 Solve on the Pad

**Subject**

Show that you can solve various math problems.

**Description**

Must write the numbers in math problems vertically, and then solve the problems.

**Objective**

Subtraction and addition. By solving vertical math problems, the student learns the advantage to writing math problems using this method.

#### 8.9 Twelve Subtraction Problems

**Subject**

**Description**

Subtraction problems with regrouping.

**Objective**

#### 8.10 Subtract for 5 Minutes

**Subject**

**Description**

Subtraction with regrouping.

**Objective**

#### 8.10 Subtract for 5 Minutes

**Subject**

**Description**

Subtraction with regrouping.

**Objective**

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Mission 9 Volume and Weight

#### 9.1 Volume

**Subject**

See von Scrap and Max argue over who is the best at dice.

**Description**

Demo about volume

**Objective**

Understanding volume

#### 9.2 Build with Dice

**Subject**

**Description**

von Scrap has made these shapes. Can you make them with the clever centi-dice?

**Objective**

Understanding volume.

#### 9.3 Does it weigh the same?

**Subject**

Help with volume and weight.

**Description**

The student learns the relationship between weight and volume through a conversation where they have to choose the correct answer.

**Objective**

Building upon the demo about volume and weight. The student is given the role as the one who has to give the correct explanation of volume and weight.

#### 9.4 Weigh the Junk

**Subject**

Come on over and weigh junk on Pedro's scale.

**Description**

None

**Objective**

The intention is for the student to get a sense for weighing things.

#### 9.5 Sorting Value

**Subject**

Help Pedro stack the boxes correctly.

**Description**

Boxes with numbers have landed in random order. Now the student must place the boxes so the greatest values are on the bottom.

**Objective**

None

#### 9.6 Subtraction on the Pad

**Subject**

Write and solve subtraction problems!

**Description**

**Objective**

Subtraction with 2-digit numbers also including regrouping.

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Mission 10 Maps and Distances

#### 10.1 From km to m

**Subject**

Come hear what meters and kilometers have to do with each other.

**Description**

Demo about the difference between km and m.

**Objective**

The student learns both the concept of km and the difference between km and m.

#### 10.2 Sorting Value

**Subject**

Help Pedro stack the boxes correctly.

**Description**

Boxes with numbers have landed in random order. Now the student must place the boxes so the greatest values are on the bottom.

**Objective**

The student practices their knowledge of the number sequence, thus strengthening their perception of the numbers as ordinal numbers. Numbers up to 99 are used.

#### 10.3 The Coordinates

**Subject**

See what the Wroom-Wroomer, Morning Island and coordinates have in common!

**Description**

None

**Objective**

None

#### 10.4 Find the Coordinates

**Subject**

Her you can practice coordinates.

**Description**

The student finds coordinates for places, and places' coordinates.

**Objective**

#### 10.5 Make a Picture with Coordinates

**Subject**

Now you have to draw the correct coordinates.

**Description**

You will draw a picture on top of a coordinate system.

**Objective**

#### 10.6 Solve the Jigsaw Puzzle

**Subject**

**Description**

The student completes a jigsaw puzzle. Coordinates describe the pieces' placement.

**Objective**

#### 10.7 Find Your Way on Maps

**Subject**

Help with maps, coordinates, km, and m.

**Description**

The student learns about how to use coordinates and how to calculate distances through addition problems, through a conversation where they have to choose the correct answer.

**Objective**

Building upon the demo about maps and coordinates and upon the demo about k and m. The student learns why and how maps and coordinates are related to finding your way, and how distance relates to km and m.