build a series circuit including one battery, resistor and ammeter
make note of the potential difference and record the current, use V=IR to calculate resistance
add another resistor in series and again measure current and use potential difference of battery to get resistance
repeat this until youve used atleast 4 resistors
plot a graph and u should find that the more resistors you add to series, resistance increases
using the same equipment, build the same initial circuit
measure total current and calculate resistance
this time add another resistor but in parallel
again measure current and calculate resistance
repeat again until youve put atleast 4 resistors in parallel
plot a graph for parallel circuit and you should see that adding more resistors increasing amount of current as there are more directions which decreases resistance