Category Archives: Math Riddles

Math 6_ Winter Break

Happy Winter break!

Bored yet?

Here are the last few homework assignments that you may have missed:

Dec 4_ Rates and Ratio HW

Dec_16 Rate_Percent (Dec_16 Rate_Percent problems solving)

Math Face Decimals (Adding subtracting decimals)

Math Face (2nd) (Mixed operations)

Percent Math Face

Blank Math Face

Worksheet 2d

Dec_4 Meaning of Percent

Here is the Winter Break Review Packet:

Winter Break Study Packet

Having troubles? Go to youtube.com to find some good videos!

Riddle (if you come on January 6 with the answer… there may be a prize!)

There are three boxes. One has apples, one has oranges and the other has apples and oranges. The boxes are labeled wrong so that no label is correct. Sue opens just one box, and without looking in the box, takes out one piece of fruit. She looks at the fruit and immediately labels all the boxes correctly. Which box did she open and how did she know?

http://mathriddles.williams.edu/?p=94

Math 8_November 20

Today we…

* Reviewed equations with fractions as coefficients

* Had an introduction to inequalities!

* Discussed logic as we debated opposites of inequalities

Here was our warm up problem

Then we looked at inequalities!

If you are wanting another explanation…

Another example you ask?? With pleasure…

Which symbols are opposites?

Still feeling a bit cloudy on this? Here is a great website with some explanations.

http://www.mathsisfun.com/algebra/inequality-solving.html

And the home work due tomorrow: Nov 20_Inequalities HW

See you tomorrow!

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If all girls are blonde,

and Emma is a girl,

does it make logical sense that Emma is blonde?

if we know Emma is a blonde, is she necessarily a girl?

Math 8_November 12

Happy Happy 11-12-13 🙂

Today we…

* Solved algebraic equations with fractions

* Explored algebraic story problems in groups

* Presented solutions in front of the class

Our warm up… bit tricky 🙂

Our class work: Nov_12 Algebra equations CW

Homework Due WEDNESDAY! Nov 12_Undo Fractions HW

A video for extra practice you ask??? Surely!

You’re better than Calvin… you know you are…

Math 8_ November 4

Today we…

* Solved equations using a balance scale approach!

* Used “Hands-on Equations” to find solutions.

Here was our warm up:

Here are a few problems we solved with steps (inverse operations)

We used a balance scale to help us remember that when we undo something on one side of an equation, we must undo the other side as well….

Here is a link to access some videos and example problems:

http://www.borenson.com/AboutHandsOnEquations/SampleEquations/tabid/841/Default.aspx

No homework today, see ya tomorrow!

 

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Riddle me this…

The police rounded up Jim, Bud and Sam yesterday, because one of them was suspected of having robbed the local bank. The three suspects made the following statements under intensive questioning.

  • Jim: I’m innocent.
  • Bud: I’m innocent.
  • Sam: Bud is guilty.

If only one of these statements turns out to be true, who robbed the bank?

Math 6_ November 4

Today we…

* Added, Subtracted, and Multiplied Decimal Numbers!

 

Our warm up:

Then we divided into groups and worked on the following worksheets:

Nov 4_Intro Multiplying decimals story problems

We also started a conversation about multiplying by powers of 10.

Here are some of our class notes

So we move the decimal place to the right when we multiply. And the number of places we move it is the same as the number of 0’s after 1!

No homework 🙂 See you tomorrow!!

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Riddle me this….

The police rounded up Jim, Bud and Sam yesterday, because one of them was suspected of having robbed the local bank. The three suspects made the following statements under intensive questioning.

  • Jim: I’m innocent.
  • Bud: I’m innocent.
  • Sam: Bud is guilty.

If only one of these statements turns out to be true, who robbed the bank?

Math 6_ October 21

Today we…

* Represented Division of Mixed numbers with models and equations!

* Practiced describing our mathematical processes by presenting problems on the document camera

Here is our warm up problem and class notes:

Remember from Friday (I didn’t post)

We described the Division Algorithm today

And when we model…

Remember we don’t want to divide our friends! We divide the pizza!

Homework: Challenge problem #2 on the worksheet (Picture below)

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Riddle of the week! (bring an answer to my classroom for candy!)

You are standing outside of a room. The door to the room is closed. Inside the room is a light bulb. Outside of the room there are 3 light switches. One turns on the bulb, the other two are useless. You can turn the switches on and off as many times as you like, but you can only enter the room once to check. You cannot see underneath the door or through a keyhole. The only way to see inside the room is by opening the door.

How can you figure out which switch turns on the light bulb?

Math 8_October 14

Today we…

* Reviewed finding angle measures

* Rehearsed using proper mathematical vocabulary when justifying our answers

* Began our Geometry Maps!

Our learning target:

I will use appropriate vocabulary to describe angles and why they are congruent.

Part of the warm up:

Our group project!!! City Maps: Geometry City Map

Today our goals were to:

I’m excited to see what you and your group can do with this!

HOMEWORK (just page 3) UsingGeoVocab

 

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Riddle! Come to class with an answer to collect your chocolatey prize : )

One day your minimalist friend is visiting, and she presents you with the numbers 2, 3, 4 and 5, and the symbols = and +, and the following tantalizing challenge:  It is possible to use each number and symbol once and only once and end up with a true equation; further, you cannot use any number or symbol not given. How can you do this?

Math 6_October 14

Today we…

* Divided whole numbers by fractions!

* Observed patters when we divide by numbers greater than 0 and less than 1 (fractions!)

* Determined division equations from story problems and number sentences.

Warm up:

Here are some notes you could have/should have taken:

Vocabulary…

Class notes…

HOMEWORK: Bits & Pieces II pg 55 problem 1 (all parts a-j)

See ya tomorrow!

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New riddle: Come to class with an answer to claim a prize!

One day your minimalist friend is visiting, and she presents you with the numbers 2, 3, 4 and 5, and the symbols = and +, and the following tantalizing challenge:  It is possible to use each number and symbol once and only once and end up with a true equation; further, you cannot use any number or symbol not given. How can you do this?

Math 8_ October 8

Today we…

* Used relationships of angles, parallel lines, transversals, and triangles to determine missing angles measures.

* Defined new vocabulary

* Discussed a bit about the origin of geometry (Those nerdyy Egyptians and Babylonians)

These concepts can be tough because we don’t always…

at first.

So we will need to practice “seeing it”.

Here was a homework problem we discussed:

And the warm up problem:

Remember, when you are looking at homework and see angles with 1 or 2 hash-marks, those hash-marks indicate which angles are congruent (have the same measure).

New Vocabulary!

HOMEWORK DUE tomorrow: EqualAngles pg 1 &3 (only pg 1 & 3)

Thanks for your hard work and participation today! See ya tomorrow!

(Come to class with the answer to this riddle to claim your prize)

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You have 12 coins, one weighs slightly less or slightly more than the others. Using an equal arm balance and only making three weighings determine which one is different and whether it is slightly less or slightly more. Warning: the fact that you don’t know whether it is less or more is a major problem in the
solution.