PUGH CHART

Assign weights to the objectives

Objectives	Weights
Cost	6
Creative Learning of a skill	8
Interactive	5
Attractive	2
No. of shapes learnt	7
Rewarding	3
Space	4

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Cost	6	Datum	+	-	+
Creative Learning of a skill	8	Datum	-	+	++
Interactive	5	Datum	+	+	++
Attractive	2	Datum	0	+	++
No. of shapes learnt	7	Datum	+	0	++
Rewarding	3	Datum	+	++	-
Space	4	Datum	+	-	0
Score(+)		0	32	21	50
Score(-)		0	-8	-10	-3
Total		0	24	11	47

5.1 Justification for the scores given

Design 1

Objectives	Score Allocated	Justification for the Score
Cost	DATUM	As reference
Creative Learning of a skill	DATUM	As reference
Interactive	DATUM	As reference
Attractive	DATUM	As reference
No. of shapes learnt	DATUM	As reference
Rewarding	DATUM	As reference
Space	DATUM	As reference

Design 2

Objectives	Score Allocated	Justification for the Score
Cost	+	The expenses are less as compared to datum.
Creative Learning of a skill	-	The learning outcome is not creative
Interactive	+	The model is attractive to eyes.
Attractive	0	The shapes learnt are same as compared to datum.
No. of shapes learnt	++	The number of shapes learnt are more compared to datum.
Rewarding	+	The model rewards as compared to datum.
Space	+	The space occupied by the model is less compared to datum.

Design 3

Objectives	Score Allocated	Justification for the Score
Cost	-	The components used are more compared to that of datum.
Creative Learning of a skill	+	The model helps in creative learning compared to datum.
Interactive	+	The model interacts with the user.
Attractive	+	The model is aesthetically pleasing compared to datum.
No. of shapes learnt	0	The shapes learnt are same as that of datum.
Rewarding	++	The model rewards the user.
Space	-	The model occupies more space compared to datum.

Design 4

Objectives	Score Allocated	Justification for the Score
Cost	+	The model costs less compared to that of datum.
Creative Learning of a skill	++	This model helps in creative learning.
Interactive	++	The model interacts with the user throughout its usage as compared to the other model.
Attractive	++	The model is aesthetic compared to datum.
No. of shapes learnt	++	The number of shapes learnt are more compared to the datum.
Rewarding	-	The model is not rewarding.
Space	0	The model occupies a same space compared to datum.

5.2 Selected Design

5.3 Product Architecture

5.3.1 Function Clustering

5.3.2 Subsystem List

Sl. no	Subsystem
1.	User Interface Unit
2.	Shape Displaying Unit
3.	Indication Unit

5.3.3 Interaction Between Subsystems

User-Interface Unit	Shape Displaying Unit	Indication Unit
Spatial Interaction	YES	YES
Data Interaction	YES	YES
Material Interaction	NO	NO

Shape Displaying Unit	User-Interface Unit	Indication Unit
Spatial Interaction	YES	YES
Data Interaction	YES	YES
Material Interaction	NO	NO

Indication Unit	User-Interface Unit	Shape Displaying Unit
Spatial Interaction	NO	YES
Data Interaction	YES	YES
Material Interaction	NO	NO