Math Jewels. Online Manipulatives and AppletsSites for Creating with MathLogic PuzzlesMath Games with that "Extra Something"Sites Targeting Specific ConceptsSites with Real-Life ConnectionsMath Tools and ResourcesSites with Data for Kids to Share and UseSoftware for Exploring with Math Each resource will open in a new window.
Close the window to return to this page. *Online Manipulatives and Applets Math Catswww.mathcats.com Applets for exploring numerous concepts. See "What a Crowd! " (estimation), Multiplication Grid, Math Cats Balance (with items ranging from electrons to galaxies), Old Egyptian Math Cats Fractions, Tessellation Town, much more. National Library of Virtual Manipul Illuminations: Interactive Math fractals tool, shape sorter, shape tool, shape pan balance (visualizing algebra), fraction pie, and many more tools spanning all levels F. *Sites for Creating with Math *Logic Puzzles C. Mr. U.N. NCTM Illuminations Activities.
Welcome to the new Sodaplay | sodaplay.com. Squeakland : home of squeak etoys.
Math cats' activities idea bank. Math cats site map. Math Cats -- fun math for kids. Helping kids to thrive on math: teachers and parents at Math Cats. Math cats' crafts. Hexagrams at Math Cats. Make a math cat: coordinate geometry. Math cats love MicroWorlds. What a Crowd! Math cats explore. Crossing the river with a wolf, a goat, and a cabbage. Really Big Numbers. Math Cats Balance. Choosing how many objects:Scroll through the number menus to choose a multiple and a power of ten. For instance, if you choose the number 4 and next to it the number 100,000, the balance will place 400,000 objects on that side of the scale.
You will still only see one object, but the scale is weighing 400,000 of them. You can choose fractions, too. If you choose the number 2 and next to it the fraction 1/100, the balance will place 2/100ths of an object on the scale. That is the same as 1/50th of an object. top . How to balance the objects: Experiment with the number of objects to place on the balance. When you are comparing two objects of very different mass, you might multiply one object by a large number and multiply the other side by a fraction. Not every pairing of objects can be balanced if the difference in their mass is too vast. Top . 1) Click on the object and a small window will pop up announcing its weight. The neutron star is shown through an x-ray telescope. Top. Math Cats Balance. This is a QR code. A QR Code is a 2-dimensional barcode, which has encoded in it a URL (web address), text, or other information.
It can be read by a QR code scanner, including QR scanner smartphone apps. Once you have an app installed on your smartphone, open the app and hold your phones camera over a QR code to read it. Most QR codes youll come across have a URL encoded, so chances are when you read the QR code it will take you to a web page. Reviewed by members of Editorial board for inclusion in MERLOT. Useful material in MERLOT Click to get more information on the MERLOT Editors' Choice Award in a new window. Click to get more information on the MERLOT Classics Award in a new window. Click to get more information on the MERLOT JOLT Award in a new window. Search all MERLOT Click here to go to your profile Click to expand login or register menu Select to go to your workspace Click here to go to your Dashboard Report Click here to go to your Content Builder Click here to log out Search Terms. Place Value Party. Math games at Math Cats. Virtual Calder Mobile at Math Cats.
Mine Control Home Page. Mine Control - Calder. Bag of mice at Math Cats. What's going on here??? Our mousetrap is called by several names: a bell-shaped curve... a normal distribution curve... a Gaussian curve (named for a German mathematician of the 19th century). A bell-shaped curve shows how likely it is that an event will turn out a certain way (the average way). Our mousetrap predicts that more mice will tumble toward the middle than the edges. Can you think why? Do the mice always pile up to fit the mousetrap exactly? Why or why not? What do you think would happen if you ran this experiment over and over again? A bell-shaped curve that is tall and narrow means we can predict the results with greater confidence. Whenever there is variation in the world around us, we can create a distribution curve to describe it.
As for our little mice... our mousetrap curve is rather wide because these mice are a bit bouncy! Tessellation Town -- tessellations at Math Cats. Welcome to the Polygon Playground! Egyptian Fractions at Math Cats. Instead of writing 2/5, they wrote 1/3 + 1/15. For 2/7, they wrote 1/4 + 1/28. Some of the fractions were very complicated. For 2/29, they wrote 1/24 + 1/58 + 1/174 + 1/232 ! How do we know about Egyptian fractions?
The written record goes all the way back to 1650 B.C.: the Rhind Mathematical Papyrus contains a table of Egyptian fractions copied from another papyrus 200 years older. Ancient Egyptians needed to understand a lot of complex mathematics to create a table like this. We know they used this system for over 2,000 years... but we don't know why! Part of the Rhind papyrus. Old Egyptian Fractions. Simply Fractions 2 is designed for second grade to fourth grade elementary students to further their understanding of fractions, it is the next step from the Simply Fractions app. Kids will learn about mixed fractions, equivalent fractions, fractions on a number line, a fraction of a collection whose size is greater than the denominator, compare fractions with different numerators and denominators, but can be compared to either 0, 1/2 or 1.
We use a scaffolding approach, where the concept is introduced visually first, later there will be games without visual aid to strengthen the concept learned. The full version has eight different mini activities. The lite version has 2 mini activities, no ads are served in either versions.Here is a summary of the activities:1. Shade Fractions 2: Like in Simply Fractions 1, you are asked to shade the squares, but the number of squares is larger then the denominator. 6. 7. 8.
Old Egyptian Fractions app. Fraction pie tool - for Old Egyptian Math Cats. Egyptian+fractions. Age calculator at Math Cats. Elapsed Time Calculator at Math Cats. How to use the Elapsed Time Calculator: Set each date to a time in the past or the future, or NOW. (Click on NOW and change to "Choose a date" if you want to set both dates.) Click and type or use the arrows to change the year. Use the drop-down menus or arrows to change months, days, hours, minutes, or seconds. (Future dates have a pale green background; past dates have a darker green background.) Ideas ~ Looking into the Future: What is the countdown from now to the last day of school? The Math Cats Elapsed Time Calculator will not accept dates earlier than 1582. OBBL Architecture Blocks. Obbl. This is a QR code. A QR Code is a 2-dimensional barcode, which has encoded in it a URL (web address), text, or other information. It can be read by a QR code scanner, including QR scanner smartphone apps.
Once you have an app installed on your smartphone, open the app and hold your phones camera over a QR code to read it. Most QR codes youll come across have a URL encoded, so chances are when you read the QR code it will take you to a web page. Reviewed by members of Editorial board for inclusion in MERLOT. Click to get more information on the MERLOT Editors' Choice Award in a new window. Click to get more information on the MERLOT Classics Award in a new window. Click to get more information on the MERLOT JOLT Award in a new window. Search all MERLOT Click here to go to your profile Click to expand login or register menu Select to go to your workspace Click here to go to your Dashboard Report Click here to go to your Content Builder Click here to log out Search Terms Enter username Enter password. Arcytech Main Page. Help for OBBL Architecture Blocks. * How can I make a picture if the blocks keep falling down?
That is the fun of OBBL! We hope you will explore and find clever ways to create your pictures. There are ways to catch some blocks before they fall all the way down. Please visit the OBBL Ideas page to get some ideas and to learn a lot of tricks.____________ * Are there any blocks that don't fall straight down? The thumbtack stays right where you place it. To this . The bubble and the blue dot have special behaviors. (See the next question to learn about some blocks that can be "glued" to other blocks * What blocks can be "glued" together to form beams or bridges?
You will see many examples on the OBBL Ideas page. Yellow horizontal blocks (supported by yellow quarter-circle arches) green wooden beam blocks (supported by matching end blocks) steel beam blocks (some of which can also be suspended from other steel beam blocks) cat tails (supported by bodies and tail tips) Also, cat heads can be glued to matching cat bodies ; and half-bricks. Ideas for OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Arches - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks.
Tree - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Arches - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Tree - OBBL Architecture Blocks. Collaborating on OBBL Architecture Blocks. Math Cats has enjoyed collaborating with Maurici Carbó Jordi to bring you Math Cats' OBBL. Maurici developed the original OBBL program and was delighted by our addition of the cat blocks and the help and ideas pages. (Maurici wrote early on: "My english is very poor, and I experience a lot of difficulties to explain myself. ") The javascript code needed to be lightly adapted to permit the changes, and both Maurici and Wendy of Math Cats worked on these changes. Maurici accepts our reset button (the magic wand below the working space), but he will not place a reset button on his own version of OBBL. His reasoning fascinates us. Here are a few of the ideas Maurici shared with Math Cats in explaining his thinking.
They are shared here with his permission: "You are free! Then Maurici explained that he likes buttons which convey a universally understood concept. "I don't like reset buttons. You can't reset a denominator! There are a lot of other reasons. That's why I don't like reset buttons. Math cats mailroom. So how do you fund Math Cats? Do you do Math Cats as a full-time job?
I'm just curious how you are able to fund this project? Keep up the great work!! I'm just intrigued with what you are doing and wondering how you are doing it. Chuck F. Reply: Yes, many people including my own family have asked me, "So how do you intend to make any money off of this site??? " And I say, "I don't. I wish I could work fulltime on it, because I have tons of ideas and half-finished projects begging for my time. For many years I was a teacher, but I quit in June 2000 and just wanted to be able to tell people *something* instead of "I have no idea what I'll do now," and so I started saying that I was going to set up a math website for kids.
I absolutely never dreamed that Math Cats would ever become a highly-respected and much-visited site. Now if you have any ideas for me about how I could fund Math Cats without ads, without sales, without a bureaucracy... I appreciate your interest! Architectural construction toys. An Architectural Toy | Ustun Alsac. Abstract Introduction The Faculty of Architecture at the Eastern Mediterranean University held its 2nd International Summer School between the 19th and 30th of June 2006 in Gazimağusa, Cyprus. We were taking part in this activity with a workshop.
This article is about an interesting design effort that came up during this workshop. When the author accepted the offer of the faculty for him to hold a workshop during its International Summer School activities, he decided together with his colleague Ms. Rafooneh Mokhtarshahi, a M. One of these exercises was about the design of a toy; students were given the assignment to design a new architectural toy.
A short lecture was held about architectural toys at the beginning and students were shown examples of some toys such as “LEGO” and “GEOMAG”, where the pieces of the toy could be put together to create some kind of construction. A fourth year student, Pınar Alsaç, developed some ideas for an architectural toy during this exercise. “Pen-Toyz”