biochamber during photosynthesis. Will it be produced by the leaves and Ask what is the last thing that plants increase, or will be go into the leaves need for photosynthesis to occur? and decrease. Note: teacher should go Light- around and turn on lights and seal Now we are ready to start collecting lids on biochambers Do not touch the data using the hand held the light bulb, it will get hot! computer- LabQuest/ Tell the students how to turn on the Look inside biochamber- what part Lab Quest by pushing the power of the plant is in there? Leaves button on the upper left side. See red arrow below. Leaves have water, there is CO2, and light- what are the leaves going to produce? Look at equation: sugar and O2 Is oxygen a solid, liquid, or a gas? How does the O2 get out of the Gas leaves? The holes/lips (stomata) allow for the oxygen to leave the Point to photo on Smartboard leaves Part 2: Before you collect data, what do we need to do? Make prediction Point out the CO2 probe on top of After the Lab Quest turns on, they the biochamber. Explain that will should see two sensors on the screen measure the CO2 in the container Oxygen and Carbon dioxide. during photosynthesis. Knowing what you now know about Ask what the units are for CO2- ppm photosynthesis- make a prediction parts per million. about what is going to happen to the amount of CO2 inside the sealed Ask students what the units are of biochamber during photosynthesis. O2? % Will it be produced by the leaves and increase, or will be go into the leaves Explain that they are going to change and decrease. units to ppt. Ask students to discuss with their lab Ask one student touch the oxygen partner and circle their prediction. screen. They should see "change units." Have students change the Point out the O2 probe on top of the units to ppt (parts per thousand). biochamber. Explain that will measure the O2 in the container Explain that now are going to collect during photosynthesis. Knowing data. To collect data, have one what you now know about student push the green arrow on the photosynthesis- make a prediction bottom left side of the Lab Quest. about what is going to happen to the amount of O2 inside the sealed
Ask what is the last thing that plants need for photosynthesis to occur? Light- Note: teacher should go around and turn on lights and seal lids on biochambers Do not touch the light bulb, it will get hot! Look inside biochamber- what part of the plant is in there? Leaves Leaves have water, there is CO2, and light- what are the leaves going to produce? Look at equation: sugar and O2 Is oxygen a solid, liquid, or a gas? Gas How does the O2 get out of the leaves? The holes/lips (stomata) allow for the oxygen to leave the leaves Point to photo on Smartboard Part 2: Before you collect data, what do we need to do? Make prediction Point out the CO2 probe on top of the biochamber. Explain that will measure the CO2 in the container during photosynthesis. Knowing what you now know about photosynthesis- make a prediction about what is going to happen to the amount of CO2 inside the sealed biochamber during photosynthesis. Will it be produced by the leaves and increase, or will be go into the leaves and decrease. Ask students to discuss with their lab partner and circle their prediction. Point out the O2 probe on top of the biochamber. Explain that will measure the O2 in the container during photosynthesis. Knowing what you now know about photosynthesis- make a prediction about what is going to happen to the amount of O2 inside the sealed biochamber during photosynthesis. Will it be produced by the leaves and increase, or will be go into the leaves and decrease. Now we are ready to start collecting the data using the hand held computer- LabQuest/ Tell the students how to turn on the Lab Quest by pushing the power button on the upper left side. See red arrow below. After the Lab Quest turns on, they should see two sensors on the screen Oxygen and Carbon dioxide. Ask what the units are for CO2- ppm parts per million. Ask students what the units are of O2? % Explain that they are going to change units to ppt. Ask one student touch the oxygen screen. They should see "change units." Have students change the units to ppt (parts per thousand). Explain that now are going to collect data. To collect data, have one student push the green arrow on the bottom left side of the Lab Quest.
Photosynthesis%20investigation%202015.docx