**Children at the Math (and science discovery) learning centre today**
This is my children's favourite activity; manipulating with pattern blocks.

**Pattern blocks**are flat and come in a set of six geometric shapes.

Pattern cards are
available to provide designs to copy.

**Level 1 (Simple)**- Children use the pattern cards and places the pattern blocks directly above the shape accordingly; like matching. They can be used to reinforce basic shape recognition and shape matching.

**Level 2 (Moderate)**- Pattern blocks can be used with the pattern cards as an activity to learn spatial relations. Instead of making the design directly on the card, which is more of a matching task, the child can build the design on black foam mat, using the card only as a visual guide.

Today, i decided to add

**Geoboards**in my learning centre.

I gave them a task and modeled one to the children about the different squares they can make using the Geoboards and the rubber bands.

Look what they have got;

"I have different sizes of triangles."

"I have so many triangles inside the Geoboard."

"Big ones and small ones and even bigger ones. "

" I can get many triangles in one Geoboard."

(Quoted by the children)

**Number conservation of 7**

**Children must develop an understanding of conservation-knowing that a given amount remains the same though its appearance may change.**

Children explored different ways to use green apples and red apples to make 7.

Indeed, it seemed challenging for some children.

This activity got the children thinking and explored the different ways;

1 and 6

6 and 1

2 and 5

5 and2

3 and 4

4 and 3

**Back at Seed Institute****Problem 18 - Making squares with Tangrams**

How many many different sets can you make with the tangrams?

Here you go,

We managed to figure out 7 sets.

(We got 8 but we had to minus that as we tried to get a square in kind of unique way).

The 7th square was kind of hard, though it looked easy when my children did that few days ago (Day Two entry).

Here is a video of children who were challenged to make the square using the 7 pieces of the tangrams:

They did quite quick!

**********

**Multiplication and division problem structures**

(pages 168-170)

There are four different classes of multiplicative structures:

- Equal-group problems

- Comparison problems

- Combination problems

- Area and other product-of-measure problems

**Addition and subtraction problem structures**

(pages 159- 161)

**Join**

For the action of joining, there are 3 quantities involved: a start amount, a change amount and the resulting amount.

**Separate**

In separating problems, the start amount is the whole or the largest amount. In separating problems, the change is that amount is being taken away from the start value.

**Part-part whole**

Part-part whole problems involve 2 parts that are combined into one whole.

**Compare**

Compare problems involve comparison of 2 quantities. The third amount is the difference of the 2 amounts.

**Problem 19-**

**Triangle**

How do you know a triangle is 180 degrees?

A right angle is 90 degrees.

Fold the two side of the triangle, to get 90 degrees.

Hence, add the 2 right angles,

90 + 90 = 180.

Tear 3 sides of the triangle and lat them out in a straight line, it will show that the triangle is indeed 180 degrees.

We continued with making rectangles using the triangle by folding, cutting and moving the pieces of 1 triangle.

That sums up for the evening!

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