Picturing exponential growth, powers of 10, can be hard for any of us to imagine. The spreadsheet has the flexibility to enable us to explore the powers of 10 and to get a visual image of them. We can see the difference in shape between odd and even powers, and get a sense of the speed of exponential growth. We use powers of ten to gain a sense not only of big numbers but of how big spreadsheets can be.
Tag: place value
Place Value: Thousands
We extend the place value generator to 100’s of thousands to show you how the pattern of 1’s, 10’s, 100’s, continues to 1,000’s, 10,000’s, 100,000’s. Enter numbers and watch the expanded and compact forms of place value change. Pay special attention to using text units and take a look at the rule we used to add those units to the number while letting the number change.
Place Value: Decimals
We take our place value generator to decimals to help students see the simplicity of the place value pattern going right as well as left.
Place Value
Our number system inherited from India and from the Medieval Arab world enables us to use just 10 symbols to write any number we can imagine. Students learn in this spreadsheet to enter numbers, to compare compact and expanded forms of those symbols and to add units to any number. Students who like to explore further can extend the place values from 3 digits to more and learn the trick that lets them include any kind of text with numbers they can change.