An illustration of a bundle of 76 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

76 Sticks

An illustration of a bundle of 76 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 77 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

77 Sticks

An illustration of a bundle of 77 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 78 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

78 Sticks

An illustration of a bundle of 78 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 79 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

79 Sticks

An illustration of a bundle of 79 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 80 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

80 Sticks

An illustration of a bundle of 80 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 81 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

81 Sticks

An illustration of a bundle of 81 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 82 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

82 Sticks

An illustration of a bundle of 82 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 83 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

83 Sticks

An illustration of a bundle of 83 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 84 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

84 Sticks

An illustration of a bundle of 84 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 85 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

85 Sticks

An illustration of a bundle of 85 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 86 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

86 Sticks

An illustration of a bundle of 86 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 87 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

87 Sticks

An illustration of a bundle of 87 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 88 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

88 Sticks

An illustration of a bundle of 88 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 89 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

89 Sticks

An illustration of a bundle of 89 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 90 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

90 Sticks

An illustration of a bundle of 90 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 91 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

91 Sticks

An illustration of a bundle of 91 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 92 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

92 Sticks

An illustration of a bundle of 92 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 93 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

93 Sticks

An illustration of a bundle of 93 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 94 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

94 Sticks

An illustration of a bundle of 94 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 95 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

95 Sticks

An illustration of a bundle of 95 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 96 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

96 Sticks

An illustration of a bundle of 96 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 97 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

97 Sticks

An illustration of a bundle of 97 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 98 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

98 Sticks

An illustration of a bundle of 98 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 99 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

99 Sticks

An illustration of a bundle of 99 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 100 sticks bundled in tens that can be used when teaching counting, grouping, and place value.

100 Sticks

An illustration of a bundle of 100 sticks bundled in tens that can be used when teaching counting, grouping,…

An illustration of a bundle of 200 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

200 Sticks

An illustration of a bundle of 200 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 300 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

300 Sticks

An illustration of a bundle of 300 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 400 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

400 Sticks

An illustration of a bundle of 400 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 500 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

500 Sticks

An illustration of a bundle of 500 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 600 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

600 Sticks

An illustration of a bundle of 600 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 700 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

700 Sticks

An illustration of a bundle of 700 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 800 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

800 Sticks

An illustration of a bundle of 800 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 900 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

900 Sticks

An illustration of a bundle of 900 sticks bundled in hundreds that can be used when teaching counting,…

An illustration of a bundle of 1,000 sticks bundled in hundreds that can be used when teaching counting, grouping, and place value.

1000 Sticks

An illustration of a bundle of 1,000 sticks bundled in hundreds that can be used when teaching counting,…

"Accessory buds of box-elder (Negundo). A, front view of group; B, two groups seen in profile." -Bergen, 1896

Maple Buds

"Accessory buds of box-elder (Negundo). A, front view of group; B, two groups seen in profile." -Bergen,…

"Group of follicles and a single follicle of the Monkshood." -Bergen, 1896

Follicles

"Group of follicles and a single follicle of the Monkshood." -Bergen, 1896

"Alnus glutinosa. A, a flowering twig; s, staminate catkins; p, pistillate catkins; B, a group of staminate flowers, enlarged; C, two pistillate flowers, enlarged." -Bergen, 1896

Alder Flowers

"Alnus glutinosa. A, a flowering twig; s, staminate catkins; p, pistillate catkins; B, a group of staminate…

A group of words or phrase written by figures or pictures of objects whose names resemble in sound the words or syllables of which they are composed. In heraldry a rebus is a device on a coat of arms conveying an allusion to the name of the person, as castles for Castleton, three cups for Butler. The accompanying cut show a rebus on a personal name (not very happy attempts, however), standing for the name Islip.

Rebus of Abbot Islip

A group of words or phrase written by figures or pictures of objects whose names resemble in sound the…

A group of words or phrase written by figures or pictures of objects whose names resemble in sound the words or syllables of which they are composed. In heraldry a rebus is a device on a coat of arms conveying an allusion to the name of the person, as castles for Castleton, three cups for Butler. The accompanying cut show a rebus on a personal name (not very happy attempts, however), standing for the name Oldham (Owledom).

Rebus of Bishop Oldham

A group of words or phrase written by figures or pictures of objects whose names resemble in sound the…

The mastiff, and large dog of the hounds.

Mastiff

The mastiff, and large dog of the hounds.

A teacher watches a group of students weighing apples and writing out measurement problems on the chalkboard.

Weighing Apples

A teacher watches a group of students weighing apples and writing out measurement problems on the chalkboard.

Three students use measuring tape to measure the school garden outside.

Measuring Garden

Three students use measuring tape to measure the school garden outside.

A teacher helps students do math with a sand table, a predecessor to the abacus.

Sand Table

A teacher helps students do math with a sand table, a predecessor to the abacus.

"Map and section of trap ridges near Woodbury. The topography is indicated by sketched contours, with hachures for trap bluffs. The lower sandstone slopes are all covered, and the northern bluff of the western group of ridges is quite buried in drift. The crystalline rocks appear on the east. The section suggests an interpretation of the surface forms." -Walcott, 1901

Trap Ridges

"Map and section of trap ridges near Woodbury. The topography is indicated by sketched contours, with…

The name generally given to a group of South American prehensile-tailed monkeys, including fifteen or sixteen species, whose characteristics it is exceedingly difficult properly to define.

Capuchin Sapajou

The name generally given to a group of South American prehensile-tailed monkeys, including fifteen or…

A group of insects belonging to the order Hymenoptera, and distinguished by the peculiar confirmation of the ovipositor of the females, which is composed of two broad plates, with serrated or toothed edges.

Saw Fly Hovering Above a Plant

A group of insects belonging to the order Hymenoptera, and distinguished by the peculiar confirmation…

By pricking the end of the finger with a needle, we can obtain a drop of blood for examination. Place it on the slide, cover with a glass, and put it under a microscope. The red disks will be seen to group themselves in rows, while the white disk will seem to draw apart, and to be constantly changing their form. After gradual evaporation, the crystals may be seen.

Blood Crystals

By pricking the end of the finger with a needle, we can obtain a drop of blood for examination. Place…

A group of fat cells (F, C) with capillary vessels (C).

Fat Cells with Capillary Vessels

A group of fat cells (F, C) with capillary vessels (C).

From a section of the lung of a cat, stained with silver nitrate. Labels: A. D., alveolar duct or intercellular passage; S, alveolar septa; N, alveoli or air cells, lined with large flat, nucleated cells, with some smaller polyhedral nucleated cells; M, Unstriped muscular fibers. Circular muscular fibers are seem surrounding the interior of the alveolar duct, and at one part is seen a group of small polyhedral cells continued from the bronchus.

Air Cells from a Cat's Lung

From a section of the lung of a cat, stained with silver nitrate. Labels: A. D., alveolar duct or intercellular…

"The Marbled Turbo is the largest shell in the group. It is marbled green, white and brown outside, and superbly nacred inside."

Turbo Marmoratus (Linnaeus)

"The Marbled Turbo is the largest shell in the group. It is marbled green, white and brown outside,…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Tescallatus (Born.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Nobilis (Linn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Gloria Maris (Chemn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"The genus <em>Conus</em> is especially rich in species, as well as numerous individuals. This group presents a remarkable uniformity of shape."

Conus Textilis (Linn.)

"The genus Conus is especially rich in species, as well as numerous individuals. This group…

"Egyptian noble hunting waterfowl on the Nile with the "throwstick' (a boomerang). The birds rise from a group of papyrus reeds, -- Egyptian relief; after Maspero." -West 1904

Egyptian Noble Hunting Waterfowl

"Egyptian noble hunting waterfowl on the Nile with the "throwstick' (a boomerang). The birds rise from…

A group of children going on a traditional hay ride.

Children on a hay ride

A group of children going on a traditional hay ride.

A small group of children sitting in an orchard playing with the wild grasses.

Children sitting in orchard

A small group of children sitting in an orchard playing with the wild grasses.

An illustration of a group of Merino ewes.

Merino Ewes

An illustration of a group of Merino ewes.

"The <em>Noctuina</em> are a group of Lepidoptera of middling size, generally found in woods, meadows and gardens, where their caterpillars have lived. They seldom fly till about sunset, or during the night."

Catocala Paranympha

"The Noctuina are a group of Lepidoptera of middling size, generally found in woods, meadows…

"The <em>Noctuina</em> are a group of Lepidoptera of middling size, generally found in woods, meadows and gardens, where their caterpillars have lived. They seldom fly till about sunset, or during the night."

Catocala Nupta

"The Noctuina are a group of Lepidoptera of middling size, generally found in woods, meadows…