Woodland – Co

May 29, 2018

Day 35

We returned from the three day weekend , to find that the tadpoles have grown front legs! We do not know if they developed on Saturday, Sunday, or Monday. On Day 35 last year, the tadpoles only had back legs!


May 21, 2018

Day 27

The tadpoles have grown back legs over the weekend. The tadpoles in both tanks have back legs, what does that mean?

In 2016, the back legs were visible at Day 34.  In 2017, the back legs were visible at day 30. In 2018, the back legs are visible at Day 27! I wonder why…………………….

May 18, 2018

Day 25

“We can see their noses!” Indeed, we can.


May 14, 2018

Day 21

The Room 2 biologists noticed that the tadpoles in the big tank are more developed, look more like frogs and have bigger eyes. We wonder if this means that they will become frogs faster, stay tuned…………………..

May 1, 2018

Day 10

Room 2 decided that our testable question is, Will the size of the tank effect the development of the tadpoles? We set up two tanks identical in every way but size. There were more eggs in the small tank that did not hatch.


April 23, 2018

Day 1

Room 2 went with Mrs. Looney’s third grade class to the vernal pool to observe the seasonal changes. We noticed our frog eggs were in the trap waiting to be collected by Dr. Erickson.

Dr. Erickson and Mrs. Beeth delivered the frog eggs to Room 2.

April 10, 2018

Today, we met our biologist in residence, Emilie, at the vernal pool. The weather at 9:00 was cloudy, no precipitation, wind speed 0, and the air temperature was 36*F and the water temperature was 38*F. We observed salamander eggs, touched a yellow spotted salamander and wood frog eggs. Emilie showed us a wood frog and talked to us about how the eggs are laid each Spring. We are anticipating the arrival of our eggs in the classroom after vacation.

May 29, 2017

Day 41

We returned from Memorial Day weekend hoping that the tadpoles were surviving after three days without food and attention from 18 kindergarten biologists. To our surprise, we had fully developed frogs! One of our fogs climbed up the side of the tank and jumped out! After a thorough search, the children made Lost and Found posters to put up in Woodland School. On May 30, 2017 we joyfully marched to the vernal pool to release our frogs to their”home”.




May 23, 2017

Day 35


May 18, 2017

Day 30

We arrived at school today to discover that our tadpoles from the small tank have back legs! Last year, the tadpoles did not get legs until Day 34!


May 9, 2017

We are noticing how much bigger the tadpoles in the small tank are and writing in our journals why we think this is happening.


May 2, 2017

Day 15

The students observed that the tadpoles were getting bigger, growing eyes and swimming fast!


April 28, 2017

Dr. Erickson brought us many more tadpoles. We think that we have 50 tadpoles in all, 5 in the small tank and about 45 in the big tank.



April 25, 2017

Day 8

Dr. Erickson brought us 5 tadpoles to test the viability of the water in our tanks.


April 24, 2017

On Monday, the biologists in Room 2 met Emilie from Grassroots Wildlife at the vernal pool. Emilie explained to us that because the frog eggs hatched on April 18 while we were on Spring Break, we would be receiving tadpoles in the classroom. However, she did find a clump of frog eggs and salamander eggs to show us. We even got see a yellow spotted salamander!

We also created a list of testable variables that could impact tadpole growth. The Room 2 biologists had a very engaging scientific discussion with Dr. Erickson.



Tuesday, May 17, Day 47

We released our frogs in the vernal pool today. It was a bittersweet day in Room 2.


Monday, May 16, Day 46

We have frogs!

The two tadpoles from the tank with vernal pool water are frogs! We will return them to the vernal pool tomorrow as their tails are reabsorbed and they are ready to eat live insects!

Monday, May 9, Day 39

Weighing in!

Tadpole in the treated water weighed 1.3 grams

Tadpole that developed from frozen egg weighed .2 grams

Tadpole kept in water from the vernal pool weighed 1.6 grams!


Tadpoles being weighed

Wednesday, May 4, Day 34

Today, we noticed that the 2 tadpoles in the vernal pool tank had back legs. The tadpoles in the treated water are without legs.

Friday, April 30, 2016

The children returned from Spring Break and were amazed at how big the tadpoles were and how fast they were swimming! The tank with the vernal pool water is difficult to see the tadpoles in. The children suggested that we “fish” them out so we could do an observation. The tadpoles were approximately 50% larger than the tadpoles in the larger tank! We had great discussions as to why this happened…..vernal pool water? Smaller tank? Less competition for food?

Friday, April 15, 2016

Today, we met our new Field School buddies in Mrs. Simon’s 4th grade class. After showing the 4th graders our tadpoles and two tanks, we headed out to the vernal pool with Dr. Erickson in the lead.

Thursday, April 14, 2016

Today, we met our 4th grade Science Buddies in Mrs. Poras’s class at field School. The scientists in Room 2 showed their buddies the tadpoles in the two tanks, explained the variable and shared facts about the development of the eggs to tadpoles. The 4th graders asked questions and shared detailed facts about the skeletal structure of the wood frog. We then led the way to the vernal pool with Dr. Erickson in the lead. We had rich discussions focusing on the question, “What ales a vernal pool a vernal pool?”. We then walked back to Woodland School and continued the discussion in the outdoor classroom.

Monday, April 11, 2016

The children did a silent cheer when they observed that all the tadpoles in both tanks were alive and growing!


Friday, April 8, 2016

We decided as a class to make the source of water in the tank the variable in Room 2 this year. On Friday, we collected water from the vernal pool and set up the smaller tank with the vernal pool water. We added two tadpoles and are hoping they will survive the change!


Wednesday, April 6, 2016

Testable Question: Does temperature effect the development of eggs into tadpoles?

Dr. Erickson visited Room 2 today with a very interesting challenge question! It has been very cold, below freezing in Weston, “Will the temperature effect the development of the eggs that are still in the vernal pool?” Dr. Erickson asked the children how we can test that question. One kindergarten scientist asked Dr. Erickson if she could bring some of the eggs from the vernal pool to our classroom tank where it is warmer……..and she did! The children were pleased to report that the eggs delveloped into tadpoles and are doing very well. It says to spot them as they are not as well developed as ours……yet!


Monday, April 4, 2016

Day 5

The children entered the room full of excitement and anticipation…..did the eggs hatch? Do we have tadpoles? Indeed we did have tadpoles and some eggs were still developing into tadpoles.

Thursday, March 31, 2016

Journaling/Day 1


Day 1-“This is the day we have been waiting for all year!”

Dr. Erickson arrived with two kinds of eggs: frog eggs and salamander eggs.

Wednesday, March 30, 2016

The children in Room 2 prepared the tank for the arrival of the tadpole eggs on Thursday.

Tuesday, March 29, 2016

Room 2 discussed what we would need to grow tadpoles in the classroom and came up with the following list:


What we need to grow eggs into tadpoles.

On March 18, we visited the vernal pool with our resident biologist Emilie from the Grassroots Wildlife Conservation in Concord. Emilie showed the children the carefully placed traps in the vernal pool. The children asked Emilie questions about life in the vernal pool. We learned about tadpoles, yellow spotted salamanders, fairy shrimp, water beetles, and wood frogs. We have been observing the vernal pool throughout the  year using our five senses and questioning, “What makes a vernal pool a vernal pool?”.

Writing in our science journals about Emilie, the traps and the animals!


Looking for signs of life in a trap.

Sounds of Life at the Vernal Pool

On March 11, Room 2 ventured out to the Vernal Pool. Dr. Erickson told us after the warm rain the night before we might hear signs of life. Indeed we did…..Spring Peepers!


Posts 2015

imageDay 30, May 27

The two tadpoles in the small tank have legs! It seemed that the tadpoles were hopping underwater so I put a big rock in the tank for the tadpoles to hop onto.

Day 29, May 26


Day 18, May 15

The children toured the other Kindergarten rooms to find out what variable each class introduced to the tank and to observe the effect of that variable on the tadpole growth and development.

DSCN0602Mrs. Clancy used water from the stream behind the Woodland Playground. There was not any visible differences in the tadpole size between treated tap water and stream water.

Mrs. Bowen used a protein chow made by biologist Brian Windmiller. The tadpoles were the largest!


We had one tank aerated and one tank not aerated as discussed in previous posts.

Day 17, May 14

imageThe children are fascinated with the eye development of the tadpoles. This tadpole is from our smaller tank without oxygenated aeration. The tadpole is bigger than the tadpoles in the large tank. After reflecting on this fact, the children felt that because the smaller tank has only 2 tadpoles, they have more food to eat!



Day 7, May 4

The children were very excited to greet the tadpoles after the weekend! We noticed the tadpole’s tail was longer and they had eyes! We projected a tadpole on the Activboard to see the eyes and watch how they use their tails to swim.



Day 4,   April 30

The children were surprised that the eggs that we transferred to the smaller tank had not hatched this morning. There were only 2 eggs hatched by the end of the day. We discussed why this might be happening. The following are their thoughts:

-the tank is smaller

-there is no air being pumped in

-there are little rocks in the small tank


Day 3,  April 29

We arrived at school to find that many eggs were hatching into tadpoles. It was time to call Mrs. Erickson!  We wanted to keep about 15 tadpoles and return the egg cluster to the vernal pool! In Room 2, we kept some eggs and put them in a smaller tank without aeration. We will keep you updated!

The eggs after being placed back in the vernal pool

The eggs after being placed back in the vernal pool


The journaling continues on Day 3:

image             image

Day 2,  April 28

The eggs  are beginning to hatch. The eggs are changing from spheres to c shapes!  The children observed empty egg cases and the egg “stretching”.

image      image

Day 1,  April 27

It was with great anticipation that the children welcomed Mrs. Erickson to Room 2. Mrs. Erickson carefully showed the children the wood frog egg cluster attached to a stick. The stick, we learned, prevents the egg cluster from floating away.


Mrs. Ericsson carefully placed the eggs in the tank that the children prepared before April vacation.


The children have begun journaling the journey of the egg to wood frog.


April 16, 2015

The children walked to the vernal pool, behind Woodland School, with Mrs. Erickson and Bryan Windmiller. We stopped along the way to listen to the birds, see the first buds of Spring, observe the wildlife under a decaying log and ask and answer thoughtful questions. The children held salamanders and frogs and watched biologist, Emile, as she collected eggs from the pool. The children thought today was,”the best day of their lives!”





9 thoughts on “Woodland – Co

  1. Dear Room 2,
    I learned a lot about tadpoles from your scientific drawings and writing! They are breathtaking and informative!
    What careful observers you have become!
    Keep up the great work! It’s so fun to learn from you!


  2. I really enjoyed looking at the pictures of the tadpoles and reading your observations about them! I learned a lot of information about tadpoles and I am so glad they are growing!


    • How neat! I love seeing the pictures and watching the transformation of the tadpoles. Glad to see they are growing. You have made some great observations too! Keep up the good work!



  3. Dear Room 2 Scientists,

    It has been very exciting hearing about your tadpoles. You have been very busy writing observations in your science notebook. I am wondering how the tadpoles breathe??

    From Your Friend,
    Mrs. Garcia


  4. Wow! Lots of information in your blog, Room 2! It is obvious you are very engaged with your tadpoles! Are the differences that you notice in your two tanks the result of one being smaller than the other or because one is aerated while the other is not? How do you know? If you were starting this project all over again, what change could you make to the tanks to test your hypothesis?


  5. I love reading about your tadpole adventure. Your tadpoles are getting so BIG!!! I can’t wait to see what happens next.


  6. The tadpoles are getting big! You have made such interesting observations about how the tadpoles might (or might not) look differently when you change things like the type of water, food or size of the tank. Nice work!


  7. Dear Mrs. Cohen’s Kindergarteners, I am interested in your thinking about how the space influences growth of the tadpoles. You think that in the smaller space, they have less tadpoles and competition to eat. What would you expect to find if we went to the vernal pool and scooped out some tadpoles? Would they be bigger or smaller than the ones you have in your small tank? Looking forward to hearing your always great thinking! Dr. Erickson


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s