Page 14 - Grade 4 Q2W5-sample

Let’s Understand

After the typhoon, some animals are taking advantage of the
condition of the environment. Ants are starting again to gather and store
foods in their anthill, birds are hunting for more foods, while mosquitoes,
frogs, and toad are starting to breed and mate in a flooded area.

Waters from floods are a good place for frogs to breed and start a new
cycle of life. On a flooded field, you will start seeing foam or gelatin-like white
materials roaming everywhere. What do you think are these?

These foams or gelatin-like white materials are the female frog’s
egg. Most frogs have a life cycle with two distinct stages, typically living in

water as young and on land as adults. Adult frogs lay large numbers of eggs

in water or other moist places (A). The eggs hatch into small, fishlike larvae
called tadpoles (B), which grow larger as they feed on algae and bits of plant

material in the water (C). As it begins metamorphosis, or change into the

adult body form, the tadpole grows hind limbs (D). After both pairs of limbs
are complete and the animal has exchanged its gills for lungs, the young frog