Question
From the chart below, find out the names of the three periods into which ancient objects are classified and use them to match the three classes given below.
| S | I | G | P | M | I |
| C | O | P | P | E | R |
| A | E | C | O | L | O |
| S | T | O | N | E | N |
(a) Stone tools : ………. Age.
(b) Copper tools and other copper objects : ………… Age.
(c) Iron tools and other iron objects : …………. Age.