Laboratório de Tecnologia Educacional BIBLIOTECA DIGITAL               DE CIÊNCIAS

Experimento didático com abordagem investigativa, que traz como estratégia a execução de experimentos sobre difusão simples e osmose antes da aula teórica, estimulando assim o levantamento de questões e hipóteses sobre os processos observados na prática, além de promover uma discussão sobre a importância da ciência e como ela está presente no dia a dia do aluno.

Physical appearance: 11 cm. The upper parts are dark and the inferior parts yellow. There is a white bar in the supercilium. The females are smaller than the males. The immature individuals have grey belly and do not have the bar above the eye. Distribution: From Mexico to Chile. Habitat: Inhabits various environments provided there is plenty of trees and flowers. Diet: Feeds mainly on nectar. Also eats insects. Visits hummingbird feeders. Reproduction: Builds two kinds of nest. A breeding one that is compact with thick walls and a resting nest made of leaves, grass and spider webs. Lays two or three white eggs. Only the female incubates. The male helps feeding the brood with i...

Physical appearance: 26 cm. The upper parts are green, somewhat yellow, barred in black. The inferior parts are buffy or white, also barred. The tail and the top of the head are black. The male has a red spot below the eye while in the female this spot is black. Distribution: From Eastern Amazon to Uruguay and Argentina. Habitat: Forest borders, gallery and secondary forests, woods and parks in cities. Diet: Feeds on ants and insect larva, mainly beetles. Also eats fruits. Reproduction: After courtship the couple builds a nest inside an old tree, sometimes palm trees and others. The nest is generally downwards, avoiding the water when it rains. Two to four eggs are laid and the ...

Physical appearance: 35,5 cm. The body is bluish gray, with an iridescent region on the sides of the neck. There is a large white region on the wings. Distribution: From Northeastern Brazil to Argentina. Habitat: Cerrado, caatinga, gallery forests, fields, crops and urban areas. Diet: Feeds on seeds and small fruits. Reproduction: The nest is made of loosely crossed sticks. The white eggs (1 or 2) are incubated by the couple. The hatchlings are fed on “pigeon’s milk”. Natural history: It is one of the largest species of pigeon in Brazil. After breeding it gathers in flocks for migration. It is so common in some places that may turn into a nuisance. Has been successfully conqu...

15cm Identification: it is one of the largest hummingbirds. It is easily identified by the forked tail, reminding a pair of scissors. Unmistakably Brazilian’s best known hummingbird, this magnificent animal is also one of the most belligerent ones. It fiercely defends its territory – usually consisting of a flowering patch – against other birds, especially the bananaquit ( Coereba flaveola ). It sucks sweet water from feeders even if these are place in the interior of the houses, fearlessly entering the rooms. Like other hummingbirds it feeds mostly on nectar but also on insects. The female lays 2 or 3 eggs in a small bow-shaped nest and feeds the nestlings mainly with arthropods.

53 cm. It is a beautiful heron with the upper parts grayish blue, the neck and the ventral region brownish yellow. The face is blue. Distribution: Open areas from Colombia to Argentina. Habitat: Unlike other herons it may be found very far from the water, thriving in open fields and only occasionally in wetlands. Diet: Feeds on mollusks, amphibians, lizards and insects, mainly grasshoppers. Hunts on the ground revolving the earth and grass with its beak. Reproduction: The courtship is very complex, beginning with displays of the male on the ground and then in the air. The nest is very simple and is built on tall trees. Lays 2 to 4 bluish grey eggs. Natural history: It is often...

Nome popular: -.

Árvore até 10m; extremidade dos ramos cilíndrica, em zig-zag, glabrescente, lisa, marrom-avermelhada no material seco; folha simples, alterna, dística, sem estípula, pecíolo canaliculado, 0,5 X 0,2cm, tomentoso a glabrescente, lâmina elíptica, ou oblonga a oblongo-obovada, ápice acuminado, ou longo-acuminado, base cuneada, 11,5-26 X 4-6cm, margem inteira, algo revoluta, cartácea, venação camptódroma, 13-17 pares de nervuras secundárias, mais conspícua na face abaxial, venação terciária formando retículo, pouco conspícuo, face adaxial glabra, abaxial tomentulosa, com tricomas mais concentrados na nervura principal. pontuações co...

Nome popular: araticum.

Árvore até 15m; extremidade dos ramos em zig-zag, lanoso-ferrugínea; folha simples, alterna, dística, sem estípula, pecíolo algo canaliculado, 1 X 0,1cm, lanoso-ferrugíneo, lâmina oblonga, elíptica ou oblongo-elíptica, ápice freqüentemente acuminado, base cuneada, 12,5-26 X 4-9cm, margem inteira, ciliada, cartácea, venação camptódroma, 13-25 pares de nervuras secundárias, paralelas, espasada ca. 1cm, mais conpícuas na face abaxial, venação terciária, paralela, perpendicular à secundária, algo conspícua, face adaxial com tricomas esparsos, abaxial lanoso-ferrugínea, tricomas adensados nas nervuras, macia ao toque; botõ...