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"Grab your mask and gloves and head on into the Dissection Lab for dissection photos, videos, worksheets, and quizzes!       Please note that these dissection images may be upsetting to some viewers."

"The vinegar and baking soda volcano is a science fair classic, but making science fun for your kids can mean a lot more than making a mess of your kitchen. If science at school doesn't sit with your children, there are plenty of fun and even delicious ways to get them excited about biology chemistry and physics - without a single worksheet."

If you're setting up a worksheet only for yourself, you can simply leave an empty cell for this purpose. To check it, just type in an x or any other character. Then use a formula with the =isblank() function to make the contents of that cell affect the rest of the spreadsheet. But you might want something more mouse-friendly--especially if you're designing a spreadsheet for other people. I've tested the technique below on Excel 2007, 2010, and 2013. I'm not sure about earlier versions. You can insert checkboxes on Excel's Developer tab. Unfortunately, that tab is hidden by default. To make it visible in Excel 2010 or 2013, click the File tab and select Options. ClickCustomize Ribbon. You'll see two lists. Make sure that the one on the right is titled Main Tabs. Check Developer.

"Erika Christakis' new book, The Importance of Being Little, is an impassioned plea for educators and parents to put down the worksheets and flash cards, ditch the tired craft projects (yes, you, Thanksgiving Handprint Turkey) and exotic vocabulary lessons, and double-down on one, simple word: NPR ED Why Kindergarten Is The New First Grade Play. That's because, she writes, "the distinction between early education and official school seems to be disappearing." If kindergarten is the new first grade, Christakis argues, preschool is quickly becoming the new kindergarten. And that is "a real threat to our society's future.""

"When we ask kids to read Chapter 3, we're telling them what to know. When we fill our boards with objectives that say "You will learn ____," we're explaining to them the very basis for the lesson we are delivering. When we give out a packet of worksheets that have fill in the blank answers, multiple choice, and matching, we're telling kids to choose answers from our choices. When we ask kids to spend days and weeks in silent classrooms answering test questions, we're telling them that knowing stuff is more important than their voice. But when we ask kids to design?"

"Any parent who has battled with a child over homework night after night has to wonder: Do those math worksheets and book reports really make a difference to a student's long-term success? Or is homework just a headache-another distraction from family time and downtime, already diminished by the likes of music and dance lessons, sports practices, and part-time jobs? Allison, a mother of two middle-school girls from an affluent Boston suburb, describes a frenetic afterschool scenario: "My girls do gymnastics a few days a week, so homework happens for my 6th grader after gymnastics, at 6:30 p.m. She doesn't get to bed until 9. My 8th grader does her homework immediately after school, up until gymnastics. She eats dinner at 9:15 and then goes to bed, unless there is more homework to do, in which case she'll get to bed around 10." The girls miss out on sleep, and weeknight family dinners are tough to swing. Parental concerns about their children's homework loads are nothing new. Debates over the merits of homework-tasks that teachers ask students to complete during non-instructional time-have ebbed and flowed since the late 19th century, and today its value is again being scrutinized and weighed against possible negative impacts on family life and children's well-being."

"Each Unplugged activity is available to download in PDF format, with full instructions and worksheets. Background sections explain the significance of each activity to computer science, and answers are provided for all problems. All you need for most of these activities are curiosity and enthusiasm. There are photos and videos showing some of the activities in action, and we've collected links to other useful resources. The activities are primarily aimed at the five to twelve year-old age group, but they are by no means restricted to this age range: we've used them to teach older children and adults too, with little modification."

"I first became aware that there might be a problem a few years ago, when one of my kids was studying weather systems: high- and low-pressure systems, cold fronts and warm fronts. We were trying to help her prepare for a test and also do some sort of homework, and she didn't get it at all. We were really frustrated, my husband and I, because all we really had as a reference was the top half of this worksheet that explained the concept. So we were having trouble explaining it to her, and at one point I finally said to her, "You know, in your class, didn't your teacher ever draw a diagram on the board?" She said, "No.""