## Sunday, October 31, 2010

### Flower Math Challenge

A florist buys roses at $0.50 apiece and sells them for $1.00 apiece. If there are no other expenses, how many roses must be sold in order to make a profit of $400? How did you figure that out?

### Cuckoo Bird Math Challenge

## If a cuckoo clock cuckoos on the hour (the number of times for that hour) and on the half hour (once each half hour) how many cuckoos does it make each day?

### 100 Coin Challenge

## Put 100 coins on the table. Make the widest structure that you can that stands at least 1 inch tall with the coins. Every coin must touch another coin and try to have the fewest coins touching the table.

# When you’re done, check out this.

## Saturday, October 30, 2010

### Pencil Math Challenge

An average pencil can write about 50,000 words. How many words can 8 pencils write? How many can 80 pencils write?

## Thursday, October 7, 2010

### Place Value Lesson Plan

Numbers are made up of digits in the same way that words are made up of letters. Digits can be any number from 0 to 9.

The number 432 (four hundred thirty-two) is made up of the digits 4,3, and 2. Each digit has a special value which depends on its place in the number.

These words are called place value headings.

four hundreds

**Place Value**is the value given to the place a digit has in a number.The number 432 (four hundred thirty-two) is made up of the digits 4,3, and 2. Each digit has a special value which depends on its place in the number.

These words are called place value headings.

ten thousands | thousands | hundreds | tens | ones |

4 | 3 | 2 |

The number 432 is made up of :

four hundreds

three tens

and two ones

You Try:

Think about how you would say the number 68,143. Copy the chart and write the numbers in the correct column.

Think about how you would say the number 68,143. Copy the chart and write the numbers in the correct column.

ten thousands | thousands | hundreds | tens | ones |

**For more practice click here.**
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