Category: Biology (Page 15 of 40)

Garden Week: Exploring Decomposition with Rotten Pumpkin

In our increasingly sterile and antibiotic-filled world, it is easy to forget the importance of microorganisms and the process of decomposition to soil quality. The picture book Rotten Pumpkin: A Rotten Tale in 15 Voices by David M. Schwartz and with photographs by Dwight Kuhn takes you down and dirty with close-ups of molds, slime molds and yeasts, as well as other organisms, to show how nutrients get recycled and organic matter added to the soil.

Rotten-pumpkin

I’ll let you know right up front that this book is not for the highly squeamish. If the thought of fly vomit makes you quiver, then you might not find the book as delightful as I did. Photographer Kuhn spares nothing as he follows the decomposition meltdown of a carved Halloween pumpkin. Remember that kids, however, might enjoy all that goo and ooze. Plus, the team of David M. Schwartz and Dwight Kuhn have worked on a number of projects together and their expertise shows.

I found this short time-lapse video that will give you an inkling of what to expect:

David Schwartz tells the story of 15 decomposing organisms from the first person point of view, bringing the reader right in. I don’t think it will be too much of a “spoiler” to let you know the cycle ends on an upbeat note with a pumpkin seed sprouting in the resulting compost.

Rotten Pumpkin will be highlighted at Halloween because of the pumpkin, but it deserves a place on the shelf all year around because of the universal processes it explores.

Related activities:

Experiencing compost and the process of decomposition first hand can be a life-changing lesson for children. Don’t be afraid to get dirty!

1. The suggestions for classroom investigations using pumpkins in the back of the book are excellent ones, for example looking at how temperature changes the decomposition process.

Compost.bin

(Photograph of compost bin in public domain at Wikipedia)

2. Composting

My sister and I consider ourselves lucky because our mother was composting back in the 1960s when we were growing up. Our mother was way ahead of her time, but we got to learn how it worked at an early age.

As we moved around the country we realized composting is one of those processes that varies a bit from place to place and situation to situation. Therefore, I recommend that before you launch a big project that you find a local class or the advice of a local gardening expert if you can. The Internet is also filled with basic information, such as website and videos. Here are just a few examples:

Michigan Kids has kid-friendly instructions about composting to get you started.

The Texas Agricultural Extension Service has a Composting for Kids slide show.

Hamilton County Recycles has a fun, upbeat video on how to get started with backyard composting:

Once you have compost going, Cornell University has a bunch of information and excellent experiment ideas at The Science and Engineering of Composting.

3. Composting with earthworms

If you don’t have room for a full-fledged compost bin, you might want to investigate a worm bin. Our family’s worm composting adventure was definitely a memorable and worthwhile experience. We also shared our worm bin with students in my son’s classes. See the Weekend Science Fun: Earthworms for more details (worm composting is towards the bottom of the post) and an instruction video.

Have doubts? Think composting might be smelly or icky? Yes, it might be those things on occasion, but experimenting with compost also will yield a much deeper understanding of our world.

Age Range: 4 – 12 years
Grade Level: Preschool – 7
Hardcover: 32 pages
Publisher: Creston Books (July 23, 2013)
Language: English
ISBN-10: 1939547032
ISBN-13: 978-1939547033

Thank you for visiting us during Children’s Garden Week. If you have children’s gardening resources you would like to include, please feel free to leave a comment.

children's-garden-week

 

Disclosures: This book was provided for review by Creston Books. Also, I am an affiliate for Amazon, and if you click through the linked titles or ads and make a purchase, I will receive a small commission at no extra charge to you. Proceeds will be used to maintain this self-hosted blog.

Great Backyard Bird Count 2014

One of our favorite bird-related activities, the Great Backyard Bird Count, is coming up next month:  February 14-17, 2014.

great-backyard bird count 2014

The bird count is a fabulous example of a child-friendly citizen science project. Basically all you need to do is count the birds you see over 15 minutes and then report them. Although it is called “backyard,” you can count anywhere you find birds, including parks, preserves or fields.

If you have participated before 2013, you will find the process has changed slightly. Now you will enter your data with the eBird data collection program, so there’s an extra step. You will need to sign up for an account with eBird and then use that to enter your counts. The advantage of signing up is that you will be able to use eBird throughout the year, and you can keep bird lists, etc.

You will find plenty of information and instructions about how to participate at the website.

Be sure to check the links on the For Educators page for a lot of good ideas for activities to extend the project.

Remember:  One easy way to encourage birds is to plant sunflowers, like the ones in the photograph below, or other plants that produce fruit and seeds.

goldfinch-for-gbbc

Related:

You may want to click the bird activities category here at Growing with Science for more posts relating to birds, including last year’s GBBC post  that contains additional activity ideas and links.

Are you doing a unit on birds? Here are two lists of bird books for children:

1. Taking Flight: a List of Children’s Books About Bird Migration at Science Books for Kids

Taking-Flight-childrens-books-about-bird-migration-300x270

2. List of children’s books for young birdwatchers at Science Books for Kids

childrens-books-for-young-birdwatchers

We would love to hear if you participate in the Great Backyard Bird Count. What kinds of birds do you see in your backyard?

Edited Jan. 15, 2014

The Dolphins of Shark Bay

Today for STEM Friday we have new addition to the incredible Scientists in the Field series: The Dolphins of Shark Bay by Pamela S. Turner, with photographs by Scott Tuason. dolphins-of-shark-bayThis outstanding book encapsulates over twenty-five years of research into dolphin intelligence by scientist Janet Mann and her colleagues working at Shark Bay in Australia.

It is difficult to decide where to start, because there is so very much packed into the book. It reveals how science is done in the field, plus gives loads of information about wild bottlenose dolphins. It also asks some hard questions about whether these intelligent animals should be kept in captivity solely for our enjoyment, and those are just a few highlights.

One of the first findings from Mann’s early studies has to do more with humans than dolphins. She found tourists who fed the dolphins at Shark Bay were inadvertently causing increased dolphin mortality because begging to humans took the mother dolphins away from tending their babies and the babies weren’t learning how to hunt, a skill they needed to survive. “Tame” dolphins were also more likely to be caught in fishing nets and injured. With her information in hand, the Australian government ended unregulated feeding of dolphins in 1995, although illegal feeding still sometimes occurs.

The main thrust of Mann’s research has been looking at dolphin intelligence from an evolutionary perspective. Why do dolphins have big relatively brains and what do they use them for? By using techniques developed in primate research, she has been able to follow individuals throughout their lifetimes. Some evidence suggests that how the males form alliances to control females for mating may be at least part of the answer.

Some of the research group’s more exciting findings include the use of “tools” by dolphins. Certain dolphins have learned to pluck sponges and carry them on their noses (rostrum) to poke around amongst rocks and on shells the bottom of the ocean to chase out fish that hide there. These fish are at least partially hidden from the echolocation the dolphins normally use to find fish and were shielded by the sharp bottom debris, at least until dolphins figured out how to protect themselves!

These special dolphins have been the subject of several BBC documentaries, some of which are available online like this one:

Lovely! Doesn’t make you want to pack your bags for Australia right now? Well, maybe not the sharks…

The Dolphins of Shark Bay will surely inspire future generations of scientists and dolphin enthusiasts. Look for it today!

For more information:

Shark Bay Dolphin Project website

Learn about different types of dolphins and other marine mammals at Kids Do Ecology

Other reviews at:

Proseandkahn

A Life in Books

Smart Books for Smart Kids (author interview)

Age Range: 10 – 14 years
Grade Level: 5 – 9
Series: Scientists in the Field Series
Hardcover: 80 pages
Publisher: HMH Books for Young Readers (November 5, 2013)
ISBN-10: 0547716389
ISBN-13: 978-0547716381

Disclosures: This book was provided by the author for review purposes. Also, I am an affiliate for Amazon, and if you click through the linked titles or ads and make a purchase, I will receive a small commission at no extra charge to you. Proceeds will be used to maintain this self-hosted blog.

 

Come visit the STEM Friday blog each week to find more great Science, Technology, Engineering and Math books.

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