In addition to that, third-fifth graders will be integrating both a second light bulb and a switch into their circuits to examine the effects of each on the complete circuit.
(third-fifth graders; will be integrating; both a second light bulb and a switch into their circuits; to examine the effects of each on the complete circuit)
third-fifth graders
will be integrating
both a second light bulb and a switch into their circuits to examine the effects of each on the complete circuit