Here is a post on Lego Fractions by New York Grade 3 teacher Alycia Zimmerman. Surprisingly I found this on an art website.

Just play with the Lego blocks. Add and subtract … you can even multiply and divide.

Next time.

Just another WordPress.com weblog

Here is a post on Lego Fractions by New York Grade 3 teacher Alycia Zimmerman. Surprisingly I found this on an art website.

Just play with the Lego blocks. Add and subtract … you can even multiply and divide.

Next time.

Go to **BASIC MATHEMATICS** here. It will take you through basic maths by your Grade level.

NB. If you can’t remember how to ‘borrow the 1’ for division or ‘carry the 2’ for multiplication here go back to the link above.

This idea comes from Burkard and Giuseppe @ the fabulous MATHOLOGER channel. Students can make a pattern called a cardioid that pops up all over math according to Burkard.

Follow these steps. There is a pdf file below the first diagram for printing exercise sheets.

And then watch the MATHOLOGER video for a really interesting explanation.

**x2 Tables on a Circle pdf file for printing**

**This circle graph blank could also be used for x3 and x4 tables, ****which produce totally different yet equally amazing patterns.**

Halfway there, now it gets tricky. +52 to each point on the circle and keep multiplying by 2.

ie. 27 x 2 = 54, 28 x 2 = 56 and so on.

so 0 = 52, 1 = 53, 2 = 54, 3 = 55, 4 = 56 etc

This shape is called a CARTIOID.

There is so much maths around sound, but sound is simple.

Sound is made by something vibrating in air. The vibrations create waves and these pressure waves hit your ear.

The frequency, measured in Hertz Hz, is the no. of pressure waves per second hitting your ear.

**Projects Studio Handbook HARMONICS**

This is a vibration plate. Sand collects in the areas which do not vibrate and create patterns. The patterns are called CHLADNI figures.

In fact, the sand collects in places where standing waves – waves that cancel each other out – form. The rest of the plate is vibrating and making the sound.

You will find more info about this violin shaped vibration plate **here.**

The frequency of the sound creating this Chladni pattern is shown in Hertz Hz

**Other Sound Math:**

**Make a match Box sing like Sinatra**

**The Curious Nature of Drummers’ Brains**

**Pump Up the volume or Knock, Knock Knockin on Your skull wall!**

One of the best summaries of sound can be found here at Maths is Fun

**Other Sound Math:**

**Make a match Box sing like Sinatra**

**The Curious Nature of Drummers’ Brains**

**Pump Up the volume or Knock, Knock Knockin on Your skull wall!**

**The logarithmic equation for sound and the decibel calculator here**

**More here**

**Other Sound Math:**

**Make a match Box sing like Sinatra**

**The Curious Nature of Drummers’ Brains**

**Pump Up the volume or Knock, Knock Knockin on Your skull wall!**

**Other Mathspig Sound Posts:**

**The Curious Nature of Drummers’ Brains**

**Pump Up the volume or Knock, Knock Knockin on Your skull wall!**