Woodland – LaCava

May 14, 2018

Today, we noticed that the water in the Vernal Pool tank is really low.  We are going to walk to the Vernal Pool to collect more water for the tank.  While looking into the two tanks, we noticed that the tadpoles have gotten bigger.  They appear to be the same size in both tanks!  None of our tadpoles have started to grow hind legs.  Some of us observed a small, dark line near the tadpole’s tails.  We wonder if those are hind legs starting to grow?


April 30, 2018


Today, we observed the tadpoles in both of our tanks.  Tadpoles are swimming in both tanks, but we noticed that the tadpoles in the Vernal Pool water are swimming a lot more and a lot faster.  They also keep coming up for air!  So far, we think the Vernal Pool water is better for tadpoles!  They seem to be growing and changing faster than the tadpoles in the treated water.  We wonder which tadpoles will start to change into froglets first.  We are looking for hind/back legs to develop!



April 25, 2018


Some of our eggs have hatched! We see more tadpoles in the Vernal Pool water than we do in the treated water.




April 23, 2018

Today, Dr. Erickson delivered our frog eggs.  We put 1/2 of the eggs in vernal pool water and half of the eggs in treated water.  We wonder which water will be better for our frogs.  Stay tuned for our observations, predictions, and evidence!








Today we met Biologist Emilie at the Vernal Pool.  She showed us a wood frog, wood frog eggs, a yellow spotted salamander and salamander eggs!  We noticed that the frog eggs were darker and a lot closer together than the salamander eggs.  We are eagerly awaiting the arrival of our frog eggs.  They will arrive in Room 5 after vacation, and we will care for, feed, and observe them.  Stay tuned for what we notice and wonder!




June 5, 2017

Sadly, the tadpoles in Room 5 didn’t survive the weekend.  As scientists, we are curious about what happened.  Here are some of our thoughts:

“Maybe there wasn’t enough water in the tank.  Maybe there wasn’t enough food.”

“Maybe they needed to be in their natural habitat.”

“Maybe they didn’t eat enough.”

“I think that the tadpoles in the treated water got hurt by the pump.  Maybe the tadpoles in the vernal pool water ate the leaf by accident.”

“Maybe the tadpoles ate too much.”

Stay tuned for more thoughts about our tadpoles…

May 26, 2017

The froglet watch continues!  We still have tadpoles, but Room 2 was kind enough to deliver a froglet for us to observe.  We noticed that the froglet has developed both hind and front legs.  We also noticed that it still has a tail.  We wondered how long it would take for the tail to disappear and for the froglet to become a frog?  We also wondered why Room 2’s tadpoles have grown so much faster than ours?  Does the small tank make a difference?  What kind of water did they use?  What kind of food did the tadpoles eat?  Were our eggs laid later than Room 2’s eggs?  Stay tuned!


May 24, 2017

We are still in the “tadpole” stage of the life cycle!  We wonder when our tadpoles will begin to grow hind legs?  How long will it take to transition into the “froglet” stage?

May 22, 2017

Many of the other classes have reported that their tadpoles have begun to develop hind legs.  We checked both tanks, and noted that our tadpoles have not.  We will continue to monitor for changes!

May 11, 2017

Room 5 studied 1 tadpole from each of the tanks today.  We wanted to observe and record growth, development, and other changes in the tadpoles.  Here is a taste of what we came up with:


“The tadpole in the Vernal Pool water was bigger and he was moving more.”

“The tadpole in the Vernal Pool water was swimming faster!”

“The bigger tadpole was moving really quick.  He’s from the tank that has Vernal Pool water.”

“The tadpole in the treated water is moving a little, but not that fast.  The one in the Vernal Pool water is speedy and swimming everywhere!”

“The tadpole in the treated water doesn’t swim a lot.  The one in the Vernal Pool water swims really fast.”

“The one in the Vernal Pool water is see through.  The other one in the treated water is not see through.”

Based on our collected evidence, students have thus far concluded that Vernal Pool water is best for tadpole/frog development.  As one student said, “The Vernal Pool is their natural habitat.  That means they should grow better in it!”  We will continue to monitor tadpole growth and development to see if our hypotheses are correct!

May 3, 2017

Today we looked into both tanks to see if we could note any differences in the tadpoles.

Here are some things we observed:

“I noticed that the tadpoles in the Vernal Pool water are moving and swimming around more.”

“I noticed that the tadpoles in the treated water are bigger.”

“I noticed the tadpoles in the Vernal Pool water were eating some of the plants that are in the tank.”

May 1, 2017

Tadpole Thoughts of the Day:  How will we know/decide whether tadpoles develop better in treated water or vernal pool water?

  • Which tank has the most tadpoles/froglets/frogs at the end of our observation period?
  • Which frogs develop faster?
  • Which tank has bigger tadpoles? Heavier tadpoles?
  • Which tank has the fewest tadpoles that died?
  • Which tank has the most frogs?
  • Which tadpoles swim the fastest?  Which tadpoles move the most?

April 28, 2017

The rest of the tadpoles have arrived!  Room 5 has about 50 in all.  After brainstorming “What impacts tadpole growth,” we have decided to test whether tadpoles develop better in treated water (left) or vernal pool water (right).

April 27, 2017

We took an “up close” look at our tadpoles.  We wondered when the tadpoles would start to develop hind and front legs, and enter the “froglet” stage of the life cycle.

close up of tadpoles

April 25, 2017

Dr. Erickson delivered 5 tadpoles to our classroom.  We need to make sure we have provided our tadpoles with a safe, temporary habitat!


April 24, 2017

Scientists in Room 5 met with Emilie from Grassroots Wildlife at the vernal pool. Emile taught us lots about the life cycle of a frog, and we got to observe eggs and tadpoles!  We even got to see salamander eggs and a yellow spotted salamander!

She explained to us that the wood frog eggs had already hatched over April vacation, so we would be receiving tadpoles in the classroom.  Stay tuned for pictures and observations of our tadpoles, as well as the variable we will be testing!


4 thoughts on “Woodland – LaCava

  1. Dear Miss LaCava’s scientists, I enjoyed reading about your investigation so far. Here’s a question for you. If you went out to the vernal pool and scooped out some tadpoles, do you think they would be the same size as the ones in your vernal pool tank in the classroom? What things might influence the tadpoles that live outside in the vernal pool? Looking forward to hearing about your thoughts. Dr. Erickson

    Liked by 1 person

    • Dear Dr. Erickson,

      We think the tadpoles that are still in the Vernal Pool would be smaller. When we took our water from the Vernal Pool, we accidentally collected teeny tadpoles! The tadpoles in the Vernal Pool were probably laid after our tadpoles.

      We have a question for you! Were all of our tadpoles collected at the same time? We are wondering why it is taking so long for our tadpoles to turn into froglets! Room 2 already has a frog!


      Room 5 Scientists


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