3D Printing a Galton Board To Demonstrate The Concept of a Binomial Distribution Here is a video of the Galton Board in action. There are a lot of outside forces that prevent the candy balls from falling accurately - such as friction, the inconsistent size of the candy balls, the acetate is flexible and causes the flat surface to buckle. Even with these inconsistencies the concept of the binomial distribution is still shown.  The mathematical concept of a binomial distribution can be visually displayed using a Galton Board. A Galton Board was invented by Sir Francis Galton (1822-1911 ..read more

  Converting a Silhouette Studio File Into a 3D Print File In Tinkercad and Making a Slide Together Sports Car In a previous blog posting I created a race car body using the Silhouette software. https://papercraftetc.blogspot.com/2023/12/a-stem-project-converting-silhouette.html In this blog posting, I created a sports car using similar principles. I am only offering the SVG file of this model because Tinkercad requires an SVG file. (Silhouette Business edition is required.) Here is the SVG.  https://drive.google.com/file/d/1pDrdDaNmW_IEs3SywwThVthaYnLxBxSr/view?usp ..read more

An Oval Box Coded In TurtleStitch and Embellished with Designs Created with the Silhouette For Mother's Day I coded the oval box in TurtleStitch and then cut it out with a Silhouette I love making boxes embellished with beautiful designs and this box fits that desire.  This is a lovely box which can be given for Mother's Day with its cheerful flowers and butterfly embellishments. I designed the oval box in TurtleStitch and then copied it to the Silhouette software to be cut.  The flower and butterfly embellishments were made with the Silhouette software. For my Silhouette friend ..read more

Image of an onion bulb epidermis as seen with an iPhone Magnifier Simple Components of a Marble Microscope Lens holder with glass marble inside, Slide carrier and a glass marble lens Simple Microscope Assembly Using a Glass Marble The microscopic world is an amazing environment to explore.  A drop of water placed on a piece of wax paper can begin your journey of magnifying objects.  The drop of water forms a round blob because of surface tension on the wax paper.  Using this water blob, you can magnify objects. In this blog posting, I use a clear glass marble from the Dolla ..read more

Stitch Markers for Amigurumi Crochet  I bought an Amigurumi crochet kit at Michaels and discovered that the kit did not include a stitch marker. I was going to purchase a medium size stitch marker but it was nine dollars!  I was astonished at the price.  I didn't want to spend that much money for a stitch marker. It looked like a safety pin and I thought, I can 3D print that. And so I did.  Here is how I did it. And I made it in two different sizes! My stitch marker project in Tinkercad. https://www.tinkercad.com/things/0wISXYdyOwp-stitch-marker-for-amigurumi-crochet ..read more

A 5 x 7 Inch Paper Picture Frame with an embroidery design created in TurtleStitch  https://www.turtlestitch.org/users/Elaine/projects/Woman%20Tambourine%20Player A 4 x 4 Inch Paper Picture Frame with an embroidery design created in TurtleStitch  https://www.turtlestitch.org/users/Elaine/projects/Draw%20Anything%20from%20Andrea! I love creating embroidery designs in TurtleStitch and I created this picture frame to display them.  I made two picture frames to accommodate the 4 x 4 inch and the 5 x 7 inch embroidery hoop size. The picture frames are cut with an electronic pap ..read more

A zoetrope is an early animation device that consists of a drum containing hand drawn or photographic images. It consists of a cylinder with vertical slits cut into the sides and a series of images or drawings placed on the inner surface. When the drum is rotated in a circular direction, and viewed through the slits, it creates the illusion that the still images are moving, creating the perception of motion. The zoetrope played a significant role in the development of motion pictures and is an early form of the motion picture projector.  Zoetrope with a box base.  The drum spins a ..read more

The Praxinoscope was invented in 1877 by a Frenchman, Charles-Emile Reynaud. The Praxinoscope was the successor of the Zoetrope.  A spinning mirrored cone creates the illusion that still images portrayed in the mirror are moving which gives the impression of animation. This was one of the early methods used for creating and viewing moving images before the advent of modern cinema. I used 65 lb. cardstock. Here is the PDF. https://drive.google.com/file/d/1mELiDGDnRxvByP5D34-9d87ZFXZfiL7q/view?usp=sharing Here is the .Studio file. https://drive.google.com/file/d/1DUtOfotSyNFGkYku1z876w73k ..read more

This Praxinoscope is made with ten 1 inch x 1 inch mirrors that I bought at Michael's craft store.  When the Praxinoscope is spun in a clockwise fashion, the horses appear to gallop.  Also, the design on the outside of the drum blurs, the diamonds disappear and the area where the diamonds are located, appears to look like a solid white line. I used 65 lb. cardstock. Here is the PDF. https://drive.google.com/file/d/1F-QehlDANfskuuxgHzkUDRyhCkuiai7N/view?usp=sharing Here is the .Studio file. https://drive.google.com/file/d/19RHfAlW50y5J_f6aH06vJSh9llhTu-wf/view?usp=sharing  P ..read more

St. Patrick's Day Scavenger Hunt For Kids At  Grandma's House Here is a PDF of an indoor St. Patrick's Day Scavenger Hunt For Kids. https://drive.google.com/file/d/1tBvedud78-901vHwasZldruC4TyHSHfS/view?usp=sharing Print out the PDF on your printer using the double sided feature. Cut out the twelve clues.  The back side of the clue tells where to hide that particular clue. The last clue is where the special surprise will be found ..read more