March 6, 2016 Math 2.0 Shape sorting, Symmetry, Odd/Even, Gravity + Water tension

Venn diagrams

We have shapes. Some are triangles and others are squares. Some are blue and some red.
    ('blue' was used to refer to both the purple and light blue shapes until confusion struck, at which point purples were removed)  

First, students sorted objects by shape (triangles inside, squares outside). Then they were asked to wrap a string around all of the triangles, and all of the squares.

Then the students were asked to sort objects by color and put a string around red, and another around the blue 

Finally, students were asked to wrap the string around the blue triangles. The goal was to create a venn diagram. This was not completed - but left for pondering (how can this be done?)

Symmetry

We use a string to define the line of symmetry 

Then I made an asymmetric pattern and asked students to add pieces to create symmetry

This one was tricky because students had to figure out that they needed to make a square from two triangles:

Review odd/even

Students were given cards with the numbers 1-10 in random order 

Then they were asked to put them in order

Some interesting questions came up, such as

'What does 0 mean?' 
'Where does it go?'

And some answers:
'It doesn't make sense, it's like a snake'

Which numbers are odd and which are even?

Is there a pattern?

• Separate odd and even
• Point to a number and decide if it is odd or even 
• Identify if the following numbers are odd or even:
• 1
• 7
• 13
• 1,010,003 is odd or even, etc.

Gravity free water experiment

Darrin demonstrated gravity by pouring water out of a glass
then put a plate on the glass, tipped it over, and it didn't spill out