Sometimes peanut butter is the mother of invention.
It was peanut butter--and a fertile imagination--that gave rise to the Knifty Knife. A small wooden utensil, the Knifty Knife is shaped something like a hacksaw, something like a finger stuck surreptitiously into a peanut butter jar. A little paddle fits snugly against the inside of the jar and allows a determined scraper to extract the last morsel of the contents.
The Knifty Knife, equally effective with smooth or crunchy, was invented by Jared Nishikawa, a sixth-grader at Westwood Elementary School. Jared looked at a spoon, looked at a knife, looked at a jar of peanut butter and said, "Nah." He knew there had to be a better way.
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Jared kept an inventor's log while he was refining his knotion. "I will change it if it doesn't work," he wrote, with true Edisonian grit.
Not to worry. The Knifty Knife is so good Jared said he thinks Skippy should offer it as a premium.
Jared's was one of dozens of ingenious devices invented by local elementary-school children on display at the Los Angeles Unified School District's fourth annual science fair, held last weekend in downtown Los Angeles.
Like many others at the fair, Jared's invention will be entered by his school in the national Invent America competition, sponsored by the U.S. Patent Model Foundation.
This year, 40,000 schools nationwide are taking part in the Invent America program, according to Margaret Shepard, a spokeswoman for the private, nonprofit foundation. The program is designed to teach youngsters innovative thinking skills, Shepard said. It includes an annual competition to find the best youthful invention at each grade level.
Battery-Operated Paint Roller
Innovative thinking was abundantly evident at the science fair. Inventions ranged from a battery-operated paint roller--created by Fernando Cisneros of Huntington Park's Miles Avenue Elementary School to help his father--to several clever but impractical improvisations on the notion of Pampers for pets.
Michael Gareth Smith, a sixth-grader at Gledhill Elementary School in Sepulveda, displayed his solution to the universal problem of schoolchildren who lean back in their chairs, teetering on two legs on the brink of orthopedic disaster.
"The kids are always driving the teachers nuts, and it is a bad habit," Michael said. "Kids do get hurt sometimes."
So Michael came up with the five-on-the-floor chair. With the help of his father, who is also an inventor, Michael affixed a fifth leg to the back of a standard-issue school chair. The fifth leg keeps the other four on the ground no matter how hard the student attempts to drive the teacher nuts.
"I'm going to try to get it patented," Michael said.
Aids for Chores
Fear and loathing of chores was an unfailing source of inspiration for the youngsters. Brandon K. Okita, a first-grader at the Brentwood Magnet Science School, submitted his Easy Catch, a magnetized implement that looks like a sponge mop.
Easy Catch is to cleaning a child's room what the long hoe is to field work. By attaching magnets to a board where the sponge should be, Brandon made an excellent tool for removing Matchbox cars and other metal toys from the floor of his room without bending over or kneeling.
Brandon's older sister, Kristin, also invented a device to save child labor. Her entry was the Tree Net, a mesh device that hangs in a tree and catches the leaves before they fall to the ground, simplifying lawn cleanup. Kristin is a fourth-grader at Brentwood Magnet.
Some of the prototypes showed a precocious polish that suggested a parent had worked almost as hard on the project as the young inventor had. That was not the case with Sarah Van Ness's Moving Magnifier, however.
Sarah, a third-grader at Brentwood Magnet, invented a simple but effective device, a plastic magnifying glass taped to the top of a little wooden truck. As Sarah explained to her science teacher, Phyllis Smolen, you can use it to read across a page or to watch moving bugs.
Mark Landsberg, a sixth-grader at Brentwood Magnet, invented a magnetized cabinet that holds much more than ordinary cabinets because metal objects cling to the sides and top as well as sit on the shelves. Theoretically, it also keeps stored objects in place during an earthquake.
The teachers who supervised the young inventors said such projects are opportunities for creative expression and more.
Smolen said inventing is a good way for youngsters to learn the scientific method: They must come up with a hypothesis for solving a particular problem, test it and modify it if it does not work. They also learn how to solve a problem in real life, she said.
Smolen gave extra credit to students who invented toys for the animals she keeps in her classroom, which resulted in a swing for the lizard and a Ferris wheel for the mouse.