The kids in my house are all big Oceanhouse iPad book fans, so today is a good day for them.

Tyrannosaurus Rex!,” “Triceratops Gets Lost,” “Woolly Mammoth in Trouble,” “Polar Bear Horizon,” and “Penguin’s Family” are all on sale for $.99.

We have 10 different promo codes in the forums for those who are quick. Go see all of Oceanhouse Media’s iPad apps on the App Store.

Oceanhouse has some other news today, as well:

Plus, today we’re launching a new education center on the Oceanhouse Media website, an exciting resource for teachers, parents and home-schoolers. The education center will offer fun ideas to help you get the most out of your omBooks, including our Smithsonian collection. You’ll find downloadable teacher’s guides with discussion questions, classroom activities, extended learning projects and tech tips.In addition, we’re saying thank you to teachers with a special sweepstakes just for them. Teachers are encouraged to visit our Facebook page and enter to win a 10-pack of the Oceanhouse Media apps of their choice (for Apple devices only). Three winners will be chosen on May 31st.

Hope you’ll join us in the celebration of teachers this month and spread the news about our sale, education center and sweepstakes. Thanks for your consideration.

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Seth Weintraub's favorite gear