How to measure the air temperature in a room using a battery, ammeter and voltmeter

How to measure the air temperature in a room using a battery, ammeter and voltmeter, copper wire. With their help, find the air temperature in the room.

Using a voltmeter, we measure the battery voltage U, connect the ammeter and copper wire in series to the battery, measure the current in circuit I with an ammeter.
We calculate the resistance of the wire R = U / I, measure the length of the wire l and its cross-sectional area S, calculate the resistivity ρ = R * s / l, then use the dependence: ρ = ρ20 (1 + α (t-20) where t- temperature, ρ20 and α – take from the reference book.