Grade 1, extends to grade 3
Heredity and Traits
Traits are passed down, but never copied exactly.
Young plants and animals look like their parents because they inherit from them, and differ because inheritance is not duplication. Brine shrimp make that measurable inside a school term. Hatch one batch, let them grow, then measure the adults. Same parents, same water, same bag, and still not the same size. That spread of measurements is variation, and the students collected it themselves rather than reading about it.
How the lab meets it
What students do that satisfies the standard
NGSS 1-LS3-1
Standard: Make observations to construct an evidence-based account that young plants and animals are like, but not exactly like, their parents.
What the kit does: Evidence-based is the part most first grade classrooms have to fake, because the usual examples are family photographs. Here the evidence is a row of shrimp from one hatch, lined up and compared. Alike enough to be obviously the same animal, different enough that no two match. That is the account, and it is theirs.
Measuring the variation
Standard: The same idea, done with numbers instead of observation.
What the kit does: Older students measure rather than eyeball. Body lengths from a single hatch, recorded and plotted, produce a spread rather than a single value. Seeing that spread is what separates inheritance from copying, and it lands far harder from their own data sheet than from a diagram of pea plants.
The radish side
Standard: Young plants, not only young animals.
What the kit does: The standard names plants first, and radish seedlings vary visibly from the day they break the seed coat. Height, leaf size, how fast each one comes up. One packet, one bag, one set of conditions, and still a range. It gives the class a plant example and an animal example of the same principle side by side.
Free downloads
Our Lesson Plans
Each lesson is one Word file. Teacher pages and answer keys first, then the student pages behind the orange PRINT FROM HERE divider.
My Pet Brainy Briny Family. Grades K to 5
What it covers: Hatching a batch and growing it out far enough to line the adults up and compare them, which is where the variation on this page comes from.
How it is built: One Word file. Teacher notes and answer keys up front, then the student pages behind the orange PRINT FROM HERE divider.
Do Plants Need Light? Grades K to 5
What it covers: The radish half of the kit, grown from one seed packet under one set of conditions. The lesson itself is about light, and the row of seedlings it leaves behind is the plant example for the traits work.
How it is built: One Word file. Teacher notes and answer keys up front, then the student pages behind the orange PRINT FROM HERE divider.
Administrator Guide
One guide for the whole elementary program rather than one per lesson. This is the copy to hand a principal or a curriculum director.