A grain is a seed. Wheat, rice, oats, corn and barley are seeds from grass plants. Whether a grain food is whole depends on how much of that seed is still there.
The Dietary Guidelines for Americans, 2025–2030 say to “prioritize fiber-rich whole grains” and to significantly reduce highly processed, refined carbohydrates such as white bread, packaged breakfast foods, flour tortillas and crackers. That is a change from the older “make half your grains whole” message of the 2020–2025 guidelines. The new food group is called Whole Grains, not just “Grains.”
The three parts of a kernel
Each grain kernel has three parts. A whole grain keeps all of them, in the same balance as the original seed, even if it’s been cracked, rolled or ground into flour.
| Part | Where it is | What it holds | Kid version |
|---|---|---|---|
| Bran | The outer skin | Most of the fiber, plus B vitamins, iron, zinc and magnesium | “The jacket” |
| Germ | The small part that could sprout into a new plant | Healthy fats, vitamin E and B vitamins | “The baby plant” |
| Endosperm | The big starchy middle | Carbohydrates (starch), some protein, small amounts of vitamins and minerals | “The packed lunch for the baby plant” |
Refined grains such as white flour and white rice are milled to remove the bran and germ, leaving mostly the endosperm. According to Harvard’s Nutrition Source, refining wheat removes almost all of its fiber, about 90% of its vitamin E and more than half of its B vitamins. Some nutrients may be added back (“enriched” or “fortified”), but not all of them.
Try it (ages 6–9): Draw a big oval kernel. Color a thin outside ring brown (bran) and a small spot at one end green (germ), and leave the middle yellow (endosperm). Then draw a second kernel with only the yellow middle and label it “refined.” Ask: “Which one still has its jacket and baby plant?”
Try it (ages 9–12): Soak a few dry whole-wheat berries or brown rice grains overnight. Next to them, soak white rice. With a magnifying glass, compare the color of the outer layers. Talk about which parts milling removed. (This is for looking only. Don’t eat the soaked raw grains.) Check for wheat allergy first, or use brown and white rice only.
Talking about refined grains without judgment
White rice, white bread, flour tortillas, pasta and naan are everyday foods in many families. They’re tied to culture, budget and comfort. Describe them neutrally: “This rice had its bran and germ taken off, so it has less fiber.” The guidelines’ advice is to choose whole grains more often and cut back significantly on refined ones. Practical swaps can be partial, like mixing brown and white rice, or using whole-wheat tortillas some nights.
Spotting whole grains on a package
The front of the box isn’t the place to look. Words like “multigrain,” “made with whole grains,” “wheat bread” or a brown color don’t guarantee much. The ingredient list is more reliable. The FDA requires ingredients to be listed by weight, with the largest amount first.
The Whole Grains Council (a nonprofit program of Oldways) suggests these clues:
| Clue on the ingredient list | What it likely means |
|---|---|
| First ingredient starts with “whole” (whole wheat, whole-grain corn, whole oats), or is brown rice, oats, oatmeal or wheatberries | Likely mostly whole grain, though not guaranteed |
| “Multigrain,” “wheat,” “stoneground,” “semolina” | Unclear. Could be whole or refined. |
| “Enriched flour,” “wheat flour,” “degerminated cornmeal” | Not whole grain |
| “Bran” or “wheat germ” on their own | Only one part of the kernel, so not a whole grain |
The Whole Grain Stamp on some packages is run by the Whole Grains Council, not the government. Harvard’s Nutrition Source describes it as industry-sponsored. The council also notes that fiber grams alone aren’t a reliable test.
Kids’ label hunt (ages 8–12): An adult gathers three clean, empty bread, cracker or cereal packages (or prints labels). In a classroom, supply them yourself rather than asking children to bring them. Kids find the first ingredient on each and mark it “whole,” “not whole” or “can’t tell.” Then they compare their answers with what the front of the box says. Continue with reading a Nutrition Facts label with kids.
Whole grains around the world
The Whole Grains Council lists many grains beyond wheat. Children may already eat some of them at home.
- Oats: oatmeal, overnight oats (soaked in milk or yogurt, no cooking needed)
- Brown, red and black rice: in rice bowls, congee and arroz con frijoles
- Corn: whole cornmeal, whole-corn tortillas and popcorn
- Teff: the tiny grain used in Ethiopian and Eritrean injera (check labels, since some injera also uses wheat or other flours)
- Millet and sorghum: in porridges and flatbreads across Africa and India
- Buckwheat: in kasha and soba noodles (many soba noodles mix buckwheat with wheat flour)
- Bulgur and farro: cracked or whole wheat, used in tabbouleh and grain salads
- Barley: in soups and stews
- Quinoa and amaranth: technically seeds from non-grass plants (sometimes called “pseudo-grains”), but grouped with whole grains because they’re eaten the same way
A whole-grains world map is a nice classroom project. Children mark where each grain is grown or eaten, then add a dish they know or would like to try. Sharing a family dish is welcome but always optional.
Safety notes
Safety: Popcorn is a whole grain, but the AAP lists it as a choking hazard for young children. Hold it until about age 4 or older, depending on the child. Wheat is one of the nine major allergens. Ask families about allergies (including wheat and gluten-related conditions) before any tasting, and offer rice or corn options, or oats labeled gluten-free, following the family’s guidance for children with celiac disease or other gluten-related conditions. Raw flour isn’t safe to taste. Keep flour activities to looking and sorting, not eating.
Where to go next
- Sort grain foods with the food group sorting tool or the sorting cards.
- See how grains fit with the other five groups in Food Groups for Kids: A Parent and Teacher Guide.
- Learn what fiber and carbohydrates do in what nutrients do, explained simply.
Printables for this activity
Sources
- U.S. Department of Health and Human Services and U.S. Department of Agriculture. Dietary Guidelines for Americans, 2025–2030. Accessed 2026-11-12.
- U.S. Department of Agriculture and U.S. Department of Health and Human Services. Dietary Guidelines for Americans, 2020–2025. Accessed 2026-11-12.
- The Nutrition Source, Harvard T.H. Chan School of Public Health. Whole Grains. Accessed 2026-11-12.
- Whole Grains Council (Oldways). Definition of a Whole Grain. Accessed 2026-11-12.
- Whole Grains Council (Oldways). Identifying Whole Grain Products. Accessed 2026-11-12.
- U.S. Food and Drug Administration. Types of Food Ingredients. Accessed 2026-11-12.
- Centers for Disease Control and Prevention. Raw Flour and Dough. Accessed 2026-11-12.
- U.S. Food and Drug Administration. Food Allergies. Accessed 2026-11-12.
- American Academy of Pediatrics (HealthyChildren.org). Choking Prevention for Babies & Children: What Every Parent Needs to Know. Accessed 2026-11-12.