PERT (Project Evaluation and Review Technique) SIMULATION WITH EXAMPLE - By Sandeep Singh

PERT Simulation Example

For Class 10: Learn PERT (Expected Time, Network Diagram, Critical Path) interactively.

1. What is PERT?

PERT (Program Evaluation and Review Technique) is used to plan projects when activity times are uncertain. It uses three time estimates: Optimistic (O), Most Likely (M), Pessimistic (P).

Expected time for one activity is: TE = (O + 4M + P) / 6 Why 4M?

2. Activity Data & TE

Project: Create a new website. Activities A, B, C, D are given with O, M, P times (days).

Task	Predecessor	O	M	P	TE
A	None	2	4	6
B	A	3	5	7
C	A	4	6	8
D	B, C	2	3	4

3. PERT Network

Nodes are events (start/finish points). Arrows are activities (A, B, C, D) with TE as duration.

1

A (4)

2

3

B (5)

5

4

C (6)

5

In this example, Task D (3 days) waits until both B and C are finished, then leads to final Node 5.

4. Critical Path

Critical path is the longest path from start to finish. Any delay on this path delays the whole project.

Path	Activities	Total Time (days)
Path 1	A → B → D
Path 2	A → C → D

5. Activity Log

Read the step-by-step explanation as you press the buttons. Teacher can use this as a story board.

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