May 29, 2018
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
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
“We can see their noses!” Indeed, we can.
May 14, 2018
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
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
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
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
May 18, 2017
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
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
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
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!
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
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
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:
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!
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!
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.
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
The 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 journaling continues on Day 3:
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”.
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!”