Showing posts with label measurement. Show all posts
Showing posts with label measurement. Show all posts

Thursday, June 16, 2011

The Art of Scale

In the spirit of full disclosure you should know up front that I have no books to share today. I'm taking a brief departure from the typical entry you find on this blog because I ran across two Web pages last night that fascinated me. I thought I would share them with you in hopes that you would know of a piece of literature or two that could be used along with these sites. I also hope that these resources inspire you to share your ideas for teaching scale.

SOURCE: Image of Swine Flu from http://www.lukejerram.com/glass/gallery

The above photo is one example of the dozen or so unusual glass sculptures created by Luke Jerram. Each beautiful piece is an authentic representation of some of the deadliest viruses on our planet. The sculptures are each about 1,000,000 times the size of the actual pathogen.

While exploring Jerram's Glass microbiology site I found a link to Learn Genetics and a depiction that is a great illustration of scale that can help you and your students comprehend just how small single cell organisms are compared to familiar items such as a coffee bean, grain of rice and a sesame seed.

Teaching Tip
I think both sites are great visual resources to use when teaching scale. What do you think? Do you see applications for these sites in your classroom? What resources and activities do you use to teach scale?

Thursday, May 5, 2011

More on Measurement

Regretfully, I do not have time to flesh out more teaching ideas today. I will give you links to three more books that are useful when teaching measurement. I invite you to add your own teaching tips.

How have you used these titles in your math classroom?

Wednesday, May 4, 2011

Early Measurement Concepts

A growing number of you are beginning to stop by my blog each day and I thank you. My goal is to build a robust resource that continues to meet your needs throughout the year. I hope that you will take a few minutes to leave a comment or send me an e-mail to let me know how I am doing or make a request.

I thought I'd mix up the format today and begin with a few teaching tips before discussing any specific book titles. Let me know what you think or if you have format preference.

Teaching Tips

A skill that both teachers and students wrestle with year after year is measurement. Teachers struggle with creating meaningful learning opportunities to effectively teach measurement concepts and it is a skill many students find difficult to master. In my opinion, the best solution from both perspectives is finding numerous opportunities to measure through the school year rather than a single one or two week unit that is rushed through near the end of the school year.

Beginning with the youngest students we start with measuring and comparing objects using non-standard units. Ask the children variety of questions that encourage them to ponder their results. There is no need to use store-bought manipulatives if they are not readily available. For example ask How many paper clips wide is your desktop? How many pencil lengths wide is your desktop? Why do you need more paperclips than pencils to measure your desktop? Ask them to predict how wide the desktop might be using a different object as the unit. The more children are able to explore measurement the better they will be able to develop their skills.

You do not have to limit their exploration to linear units. They can measure capacity by filling different size containers with rice or sand. Challenge them to predict then test how many scoops of a smaller container are needed to fill a larger container. Weight can be explored using a balance scale and experimenting how many of one object are needed to balance the scale when a different object is resting in one of the pans.

Carrie Measures's Up by Linda Abner and Inch by Inch by Leo Lionni and Super Sand Castle Saturday by Stuart J. Murphy are good choices for children as they explore measurement concepts.

"Measuring Experiences for Young Children" published in the February 2004 issue of Teaching Children Mathematics is filled with more ideas for creating measurement investigations using non-standard units.

"Rulers of Different Colors" from the August 2007 issue of TCM offers teaching ideas for transitioning students from non-standard to standard units.

Drop by again tomorrow for more on measurement.

Saturday, April 30, 2011

What time is it?

Telling time using both analog and digital clocks is an important skill that some students struggle with. Telling Time with Big Mama Cat by Dan Harper, The Clock Struck One by Trudy Harris What Time is it? A Book of Math Riddles by Sheila Keenan and Clockwise a Time Telling Tale by Sara Pinto are a small sampling of the trade-books that help children develop an understanding of the concept of time.

Teaching Tip
Make the observance of time a natural part of each day. As you go through the schedule, emphasize the time various events take place both verbally and by noting the position of the hands on a classroom clock.

The TeAchnology and Just in Time sites houses a broad selection of time related lesson plans